{"items":[{"id":"NVI-00006378","kind":"vulnerability","title":"YesWiki Vulnerable to Reflected XSS via Unescaped `id` Parameter in Bazar Widget HTML Attributes","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-r5xw-gcgw-hwp5","CVE-2026-52774"],"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-041e62bb75a200b96e22284b363b7f7f"],"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-b23bba7ca6f9b07a48dd6070eadd91ac"],"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":"2026-07-09T21:01:12.000Z","value":"6.1 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-41a55f09c39f3b35a3e0dad73a006888"},{"kind":"CVSS","as_of":"2026-09-08T21:05:26.920Z","value":"6.1 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-021aeaf0f0382ef1a88ca29244c72848"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.658%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.5151. Missing scores are unknown.","source_id":"sr-041e62bb75a200b96e22284b363b7f7f"}],"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-41a55f09c39f3b35a3e0dad73a006888","url":"https://github.com/advisories/GHSA-r5xw-gcgw-hwp5","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r5xw-gcgw-hwp5","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:40.400Z"},{"id":"sr-b23bba7ca6f9b07a48dd6070eadd91ac","url":"https://github.com/advisories/GHSA-r5xw-gcgw-hwp5","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-r5xw-gcgw-hwp5","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.357Z"},{"id":"sr-021aeaf0f0382ef1a88ca29244c72848","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52774","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-52774","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-041e62bb75a200b96e22284b363b7f7f","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-2026-52774","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-41a55f09c39f3b35a3e0dad73a006888"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\nYesWiki's Bazar widget handler reflects the `id` `GET` parameter into HTML attributes using `strip_tags()` only. Because `strip_tags()` does not escape double quotes, an attacker can break out of the attribute value, inject an event handler such as `onmouseover`, and execute arbitrary JavaScript in the victim's browser.\n\nThis issue is reachable without authentication. During validation, the vulnerable `widget` route returned the injected HTML for both `/HomePage/widget?id=...` and `/NoSuchPage/widget?id=...`, which shows that no login, no page ownership, no edit rights, and not even a valid page tag were required. The only routing prerequisite observed was that the Bazar extension is enabled and the request includes an `id` parameter.\n\n### Details\nThe primary sink is in `tools/bazar/presentation/templates/widget.tpl.html` around lines `4-7`, where `$_GET['id']` is inserted into the `data-formid` attribute:\n\n```php\ndata-formid=\"\"\n```\n\n`strip_tags()` is not an output-encoding function. It removes HTML tags, but it does not escape characters such as double quotes, so an attacker can terminate the `data-formid` attribute and inject new ","public_affected_ranges":["< 4.6.6"]},{"certainty":"source_listed","source_ids":["sr-b23bba7ca6f9b07a48dd6070eadd91ac"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\nYesWiki's Bazar widget handler reflects the `id` `GET` parameter into HTML attributes using `strip_tags()` only. Because `strip_tags()` does not escape double quotes, an attacker can break out of the attribute value, inject an event handler such as `onmouseover`, and execute arbitrary JavaScript in the victim's browser.\n\nThis issue is reachable without authentication. During validation, the vulnerable `widget` route returned the injected HTML for both `/HomePage/widget?id=...` and `/NoSuchPage/widget?id=...`, which shows that no login, no page ownership, no edit rights, and not even a valid page tag were required. The only routing prerequisite observed was that the Bazar extension is enabled and the request includes an `id` parameter.\n\n### Details\nThe primary sink is in `tools/bazar/presentation/templates/widget.tpl.html` around lines `4-7`, where `$_GET['id']` is inserted into the `data-formid` attribute:\n\n```php\ndata-formid=\"\"\n```\n\n`strip_tags()` is not an output-encoding function. It removes HTML tags, but it does not escape characters such as double quotes, so an attacker can terminate the `data-formid` attribute and inject new ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.6.6"]}],"null_published_at":"2026-11-05T19:10:21.449Z","source_updated_at":"2026-07-09T21:01:12.000Z","source_disclosed_at":"2026-07-09T21:01:10.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.357Z"},{"id":"NVI-00006378","kind":"vulnerability","title":"YesWiki Vulnerable to Reflected XSS via Unescaped `id` Parameter in Bazar Widget HTML Attributes","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-r5xw-gcgw-hwp5","CVE-2026-52774"],"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-b23bba7ca6f9b07a48dd6070eadd91ac"],"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-041e62bb75a200b96e22284b363b7f7f"],"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":"2026-09-08T21:05:26.920Z","value":"6.1 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-021aeaf0f0382ef1a88ca29244c72848"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.658%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.5151. Missing scores are unknown.","source_id":"sr-041e62bb75a200b96e22284b363b7f7f"}],"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-b23bba7ca6f9b07a48dd6070eadd91ac","url":"https://github.com/advisories/GHSA-r5xw-gcgw-hwp5","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-r5xw-gcgw-hwp5","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.357Z"},{"id":"sr-021aeaf0f0382ef1a88ca29244c72848","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52774","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-52774","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-041e62bb75a200b96e22284b363b7f7f","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-2026-52774","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b23bba7ca6f9b07a48dd6070eadd91ac"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\nYesWiki's Bazar widget handler reflects the `id` `GET` parameter into HTML attributes using `strip_tags()` only. Because `strip_tags()` does not escape double quotes, an attacker can break out of the attribute value, inject an event handler such as `onmouseover`, and execute arbitrary JavaScript in the victim's browser.\n\nThis issue is reachable without authentication. During validation, the vulnerable `widget` route returned the injected HTML for both `/HomePage/widget?id=...` and `/NoSuchPage/widget?id=...`, which shows that no login, no page ownership, no edit rights, and not even a valid page tag were required. The only routing prerequisite observed was that the Bazar extension is enabled and the request includes an `id` parameter.\n\n### Details\nThe primary sink is in `tools/bazar/presentation/templates/widget.tpl.html` around lines `4-7`, where `$_GET['id']` is inserted into the `data-formid` attribute:\n\n```php\ndata-formid=\"\"\n```\n\n`strip_tags()` is not an output-encoding function. It removes HTML tags, but it does not escape characters such as double quotes, so an attacker can terminate the `data-formid` attribute and inject new ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.6.6"]}],"null_published_at":"2026-11-01T14:34:07.498Z","source_updated_at":"2026-07-09T21:26:41.857Z","source_disclosed_at":"2026-07-09T21:01:10.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.357Z"},{"id":"NVI-00006378","kind":"vulnerability","title":"YesWiki Vulnerable to Reflected XSS via Unescaped `id` Parameter in Bazar Widget HTML Attributes","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r5xw-gcgw-hwp5","CVE-2026-52774"],"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-b23bba7ca6f9b07a48dd6070eadd91ac"],"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-041e62bb75a200b96e22284b363b7f7f"],"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":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.658%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.5151. Missing scores are unknown.","source_id":"sr-041e62bb75a200b96e22284b363b7f7f"}],"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-b23bba7ca6f9b07a48dd6070eadd91ac","url":"https://github.com/advisories/GHSA-r5xw-gcgw-hwp5","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-r5xw-gcgw-hwp5","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.357Z"},{"id":"sr-041e62bb75a200b96e22284b363b7f7f","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-2026-52774","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b23bba7ca6f9b07a48dd6070eadd91ac"],"technology":"yeswiki/yeswiki","known_exclusions":[],"conditions_summary":"### Summary\nYesWiki's Bazar widget handler reflects the `id` `GET` parameter into HTML attributes using `strip_tags()` only. Because `strip_tags()` does not escape double quotes, an attacker can break out of the attribute value, inject an event handler such as `onmouseover`, and execute arbitrary JavaScript in the victim's browser.\n\nThis issue is reachable without authentication. During validation, the vulnerable `widget` route returned the injected HTML for both `/HomePage/widget?id=...` and `/NoSuchPage/widget?id=...`, which shows that no login, no page ownership, no edit rights, and not even a valid page tag were required. The only routing prerequisite observed was that the Bazar extension is enabled and the request includes an `id` parameter.\n\n### Details\nThe primary sink is in `tools/bazar/presentation/templates/widget.tpl.html` around lines `4-7`, where `$_GET['id']` is inserted into the `data-formid` attribute:\n\n```php\ndata-formid=\"\"\n```\n\n`strip_tags()` is not an output-encoding function. It removes HTML tags, but it does not escape characters such as double quotes, so an attacker can terminate the `data-formid` attribute and inject new ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.6.6"]}],"null_published_at":"2026-10-31T22:13:44.218Z","source_updated_at":"2026-07-09T21:26:41.857Z","source_disclosed_at":"2026-07-09T21:01:10.000Z","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":"2026-10-31T21:42:41.357Z"}],"next_cursor":null,"snapshot_revision":"42594"}