{"items":[{"id":"NVI-00007210","kind":"vulnerability","title":"YesWiki has Unsafe eval() in its Formula Calculato, Leading to Remote Code Execution & Denial of Service","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-px5m-h76g-p7p8","CVE-2026-52778"],"plain_summary":"GitHub lists this reviewed advisory for yeswiki/yeswiki. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-d71a90528c27e8f46ebfa31b5e3073df"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 4.6.6 for yeswiki/yeswiki. Confirm the publisher’s latest guidance.","source_ids":["sr-d3ab976366d04d32753bc2814833d122"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-09T21:03:04.000Z","value":"9.8 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0073f697a77c1d8cf8850f5ca10bcdfd"},{"kind":"CVSS","as_of":"2026-10-06T22:10:00.247Z","value":"9.8 CRITICAL (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-049ba4b9dbfca9c800aca51a363a2c61"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.798%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.56537. Missing scores are unknown.","source_id":"sr-d71a90528c27e8f46ebfa31b5e3073df"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0073f697a77c1d8cf8850f5ca10bcdfd","url":"https://github.com/advisories/GHSA-px5m-h76g-p7p8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-px5m-h76g-p7p8","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:40.400Z"},{"id":"sr-d3ab976366d04d32753bc2814833d122","url":"https://github.com/advisories/GHSA-px5m-h76g-p7p8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-px5m-h76g-p7p8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.996Z"},{"id":"sr-049ba4b9dbfca9c800aca51a363a2c61","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52778","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-52778","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-d71a90528c27e8f46ebfa31b5e3073df","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-52778","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0073f697a77c1d8cf8850f5ca10bcdfd"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\n\nAn unsafe execution vulnerability exists in the Bazar form field calculator (CalcField.php) of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval() function. This implementation is inherently flawed: it is vulnerable to Regular Expression Denial of Service (ReDoS / Stack Overflow) which can crash the server, and it creates a high-risk architecture where any logic bypass directly results in arbitrary PHP code execution.\n\n### Details\n\nAffected Component\n- **File**: tools/bazar/fields/CalcField.php\n- **Method**: formatValuesBeforeSave($entry)\n- **Vulnerable Mechanism:** Combination of a complex recursive regex validation followed by eval().\n\n\nThe code attempts to implement a sandbox for mathematical operations by verifying the formula structure before executing it:\n\n```\n$regexpToCheckIfMathFormula = '/^((' . $number . '|' . $functions . '\\s*\\((?1)+\\)|\\((?1)+\\))(?:' . $operators . '(?1))?)+$/';\n\nif (preg_match($regexpToCheckIfMathFormula, $formula)) {\n    $formula = preg_replace('!pi|π!', 'pi()', $formula);\n    try {\n        eval(\"\\$value = $formula;\");  // VULNER","public_affected_ranges":["< 4.6.6"]},{"certainty":"source_listed","source_ids":["sr-d3ab976366d04d32753bc2814833d122"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\n\nAn unsafe execution vulnerability exists in the Bazar form field calculator (CalcField.php) of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval() function. This implementation is inherently flawed: it is vulnerable to Regular Expression Denial of Service (ReDoS / Stack Overflow) which can crash the server, and it creates a high-risk architecture where any logic bypass directly results in arbitrary PHP code execution.\n\n### Details\n\nAffected Component\n- **File**: tools/bazar/fields/CalcField.php\n- **Method**: formatValuesBeforeSave($entry)\n- **Vulnerable Mechanism:** Combination of a complex recursive regex validation followed by eval().\n\n\nThe code attempts to implement a sandbox for mathematical operations by verifying the formula structure before executing it:\n\n```\n$regexpToCheckIfMathFormula = '/^((' . $number . '|' . $functions . '\\s*\\((?1)+\\)|\\((?1)+\\))(?:' . $operators . '(?1))?)+$/';\n\nif (preg_match($regexpToCheckIfMathFormula, $formula)) {\n    $formula = preg_replace('!pi|π!', 'pi()', $formula);\n    try {\n        eval(\"\\$value = $formula;\");  // VULNER","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.6.6"]}],"null_published_at":"2026-11-08T01:52:04.816Z","source_updated_at":"2026-07-09T21:03:04.000Z","source_disclosed_at":"2026-07-09T21:03:04.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:30.996Z"},{"id":"NVI-00007210","kind":"vulnerability","title":"YesWiki has Unsafe eval() in its Formula Calculato, Leading to Remote Code Execution & Denial of Service","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-px5m-h76g-p7p8","CVE-2026-52778"],"plain_summary":"GitHub lists this reviewed advisory for yeswiki/yeswiki. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-049ba4b9dbfca9c800aca51a363a2c61"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 4.6.6 for yeswiki/yeswiki. Confirm the publisher’s latest guidance.","source_ids":["sr-d3ab976366d04d32753bc2814833d122"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-09T21:03:04.000Z","value":"9.8 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0073f697a77c1d8cf8850f5ca10bcdfd"},{"kind":"CVSS","as_of":"2026-10-06T22:10:00.247Z","value":"9.8 CRITICAL (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-049ba4b9dbfca9c800aca51a363a2c61"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0073f697a77c1d8cf8850f5ca10bcdfd","url":"https://github.com/advisories/GHSA-px5m-h76g-p7p8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-px5m-h76g-p7p8","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:40.400Z"},{"id":"sr-d3ab976366d04d32753bc2814833d122","url":"https://github.com/advisories/GHSA-px5m-h76g-p7p8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-px5m-h76g-p7p8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.996Z"},{"id":"sr-049ba4b9dbfca9c800aca51a363a2c61","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52778","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-52778","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0073f697a77c1d8cf8850f5ca10bcdfd"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\n\nAn unsafe execution vulnerability exists in the Bazar form field calculator (CalcField.php) of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval() function. This implementation is inherently flawed: it is vulnerable to Regular Expression Denial of Service (ReDoS / Stack Overflow) which can crash the server, and it creates a high-risk architecture where any logic bypass directly results in arbitrary PHP code execution.\n\n### Details\n\nAffected Component\n- **File**: tools/bazar/fields/CalcField.php\n- **Method**: formatValuesBeforeSave($entry)\n- **Vulnerable Mechanism:** Combination of a complex recursive regex validation followed by eval().\n\n\nThe code attempts to implement a sandbox for mathematical operations by verifying the formula structure before executing it:\n\n```\n$regexpToCheckIfMathFormula = '/^((' . $number . '|' . $functions . '\\s*\\((?1)+\\)|\\((?1)+\\))(?:' . $operators . '(?1))?)+$/';\n\nif (preg_match($regexpToCheckIfMathFormula, $formula)) {\n    $formula = preg_replace('!pi|π!', 'pi()', $formula);\n    try {\n        eval(\"\\$value = $formula;\");  // VULNER","public_affected_ranges":["< 4.6.6"]},{"certainty":"source_listed","source_ids":["sr-d3ab976366d04d32753bc2814833d122"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\n\nAn unsafe execution vulnerability exists in the Bazar form field calculator (CalcField.php) of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval() function. This implementation is inherently flawed: it is vulnerable to Regular Expression Denial of Service (ReDoS / Stack Overflow) which can crash the server, and it creates a high-risk architecture where any logic bypass directly results in arbitrary PHP code execution.\n\n### Details\n\nAffected Component\n- **File**: tools/bazar/fields/CalcField.php\n- **Method**: formatValuesBeforeSave($entry)\n- **Vulnerable Mechanism:** Combination of a complex recursive regex validation followed by eval().\n\n\nThe code attempts to implement a sandbox for mathematical operations by verifying the formula structure before executing it:\n\n```\n$regexpToCheckIfMathFormula = '/^((' . $number . '|' . $functions . '\\s*\\((?1)+\\)|\\((?1)+\\))(?:' . $operators . '(?1))?)+$/';\n\nif (preg_match($regexpToCheckIfMathFormula, $formula)) {\n    $formula = preg_replace('!pi|π!', 'pi()', $formula);\n    try {\n        eval(\"\\$value = $formula;\");  // VULNER","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.6.6"]}],"null_published_at":"2026-11-05T19:10:21.389Z","source_updated_at":"2026-07-09T21:03:04.000Z","source_disclosed_at":"2026-07-09T21:03:04.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:30.996Z"},{"id":"NVI-00007210","kind":"vulnerability","title":"YesWiki has Unsafe eval() in its Formula Calculato, Leading to Remote Code Execution & Denial of Service","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-px5m-h76g-p7p8","CVE-2026-52778"],"plain_summary":"OSV carries this publisher advisory for yeswiki/yeswiki. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.6.6 for yeswiki/yeswiki. Confirm the publisher’s latest guidance.","source_ids":["sr-d3ab976366d04d32753bc2814833d122"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-049ba4b9dbfca9c800aca51a363a2c61"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-06T22:10:00.247Z","value":"9.8 CRITICAL (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-049ba4b9dbfca9c800aca51a363a2c61"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-d3ab976366d04d32753bc2814833d122","url":"https://github.com/advisories/GHSA-px5m-h76g-p7p8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-px5m-h76g-p7p8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.996Z"},{"id":"sr-049ba4b9dbfca9c800aca51a363a2c61","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52778","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-52778","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d3ab976366d04d32753bc2814833d122"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\n\nAn unsafe execution vulnerability exists in the Bazar form field calculator (CalcField.php) of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval() function. This implementation is inherently flawed: it is vulnerable to Regular Expression Denial of Service (ReDoS / Stack Overflow) which can crash the server, and it creates a high-risk architecture where any logic bypass directly results in arbitrary PHP code execution.\n\n### Details\n\nAffected Component\n- **File**: tools/bazar/fields/CalcField.php\n- **Method**: formatValuesBeforeSave($entry)\n- **Vulnerable Mechanism:** Combination of a complex recursive regex validation followed by eval().\n\n\nThe code attempts to implement a sandbox for mathematical operations by verifying the formula structure before executing it:\n\n```\n$regexpToCheckIfMathFormula = '/^((' . $number . '|' . $functions . '\\s*\\((?1)+\\)|\\((?1)+\\))(?:' . $operators . '(?1))?)+$/';\n\nif (preg_match($regexpToCheckIfMathFormula, $formula)) {\n    $formula = preg_replace('!pi|π!', 'pi()', $formula);\n    try {\n        eval(\"\\$value = $formula;\");  // VULNER","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.6.6"]}],"null_published_at":"2026-11-01T14:34:07.503Z","source_updated_at":"2026-07-09T21:15:28.050Z","source_disclosed_at":"2026-07-09T21:03:04.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:30.996Z"},{"id":"NVI-00007210","kind":"vulnerability","title":"YesWiki has Unsafe eval() in its Formula Calculato, Leading to Remote Code Execution & Denial of Service","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-px5m-h76g-p7p8","CVE-2026-52778"],"plain_summary":"OSV carries this publisher advisory for yeswiki/yeswiki. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.6.6 for yeswiki/yeswiki. Confirm the publisher’s latest guidance.","source_ids":["sr-d3ab976366d04d32753bc2814833d122"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-d3ab976366d04d32753bc2814833d122","url":"https://github.com/advisories/GHSA-px5m-h76g-p7p8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-px5m-h76g-p7p8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.996Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d3ab976366d04d32753bc2814833d122"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\n\nAn unsafe execution vulnerability exists in the Bazar form field calculator (CalcField.php) of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval() function. This implementation is inherently flawed: it is vulnerable to Regular Expression Denial of Service (ReDoS / Stack Overflow) which can crash the server, and it creates a high-risk architecture where any logic bypass directly results in arbitrary PHP code execution.\n\n### Details\n\nAffected Component\n- **File**: tools/bazar/fields/CalcField.php\n- **Method**: formatValuesBeforeSave($entry)\n- **Vulnerable Mechanism:** Combination of a complex recursive regex validation followed by eval().\n\n\nThe code attempts to implement a sandbox for mathematical operations by verifying the formula structure before executing it:\n\n```\n$regexpToCheckIfMathFormula = '/^((' . $number . '|' . $functions . '\\s*\\((?1)+\\)|\\((?1)+\\))(?:' . $operators . '(?1))?)+$/';\n\nif (preg_match($regexpToCheckIfMathFormula, $formula)) {\n    $formula = preg_replace('!pi|π!', 'pi()', $formula);\n    try {\n        eval(\"\\$value = $formula;\");  // VULNER","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.6.6"]}],"null_published_at":"2026-10-31T22:13:14.316Z","source_updated_at":"2026-07-09T21:15:28.050Z","source_disclosed_at":"2026-07-09T21:03:04.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:42:30.996Z"}],"next_cursor":null,"snapshot_revision":"42594"}