{"items":[{"id":"NVI-00007035","kind":"vulnerability","title":"guzzlehttp/psr7: Host Confusion via Weak URI Host Validation","revision":5,"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-c2w2-prh8-qm98","CVE-2026-59882"],"plain_summary":"GitHub lists this reviewed advisory for guzzlehttp/psr7. 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-1d16a6b949b5b1e58e7761aba6bd1b05"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. 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Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-59882","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.284Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6b6af660ce2efe90d08ab28caaf2fac9"],"technology":"guzzlehttp/psr7","known_exclusions":[],"conditions_summary":"### Impact\n\n`guzzlehttp/psr7` did not reject URI host components containing authority delimiters (`/`, `?`, `#`, `@`, or `\\`), an embedded port such as `host:8080`, or IPv6 brackets that do not frame the host (such as `[::1` or `::1]`). `Uri::assertValidHost()` rejected only control characters, so these malformed hosts were accepted both when parsing a URI string — including through `new Uri()`, an absolute-form request target passed to `Message::parseRequest()`, and the synthetic `SERVER_NAME` or `SERVER_ADDR` fallback used by `ServerRequest::fromGlobals()` — and when setting a host with `Uri::withHost()`. Because the stored host was not validated, `Uri::getHost()` could return a value that does not agree with the URI's authority or with the host that is actually used on the wire. For example, `Uri::withHost('good.com@evil.com')` is accepted, and `new Uri('http://[gggg::1]/')` produces a `getHost()` of `'[gggg:'` while `getAuthority()` returns `'[gggg::1'`.\n\nYou are affected if your application builds a `Uri` or calls `Uri::withHost()` with host data that is wholly or partly attacker-controlled and then relies on `Uri::getHost()` for a security or routing decision, such as host al","public_affected_ranges":["< 2.12.3"]},{"certainty":"source_listed","source_ids":["sr-cc49d3e0e161ea028a2a56c88de0bbdb"],"technology":"guzzlehttp/psr7","known_exclusions":[],"conditions_summary":"### Impact\n\n`guzzlehttp/psr7` did not reject URI host components containing authority delimiters (`/`, `?`, `#`, `@`, or `\\`), an embedded port such as `host:8080`, or IPv6 brackets that do not frame the host (such as `[::1` or `::1]`). `Uri::assertValidHost()` rejected only control characters, so these malformed hosts were accepted both when parsing a URI string — including through `new Uri()`, an absolute-form request target passed to `Message::parseRequest()`, and the synthetic `SERVER_NAME` or `SERVER_ADDR` fallback used by `ServerRequest::fromGlobals()` — and when setting a host with `Uri::withHost()`. Because the stored host was not validated, `Uri::getHost()` could return a value that does not agree with the URI's authority or with the host that is actually used on the wire. 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Because the stored host was not validated, `Uri::getHost()` could return a value that does not agree with the URI's authority or with the host that is actually used on the wire. For example, `Uri::withHost('good.com@evil.com')` is accepted, and `new Uri('http://[gggg::1]/')` produces a `getHost()` of `'[gggg:'` while `getAuthority()` returns `'[gggg::1'`.\n\nYou are affected if your application builds a `Uri` or calls `Uri::withHost()` with host data that is wholly or partly attacker-controlled and then relies on `Uri::getHost()` for a security or routing decision, such as host al","public_affected_ranges":["< 2.12.3"]},{"certainty":"source_listed","source_ids":["sr-cc49d3e0e161ea028a2a56c88de0bbdb"],"technology":"guzzlehttp/psr7","known_exclusions":[],"conditions_summary":"### Impact\n\n`guzzlehttp/psr7` did not reject URI host components containing authority delimiters (`/`, `?`, `#`, `@`, or `\\`), an embedded port such as `host:8080`, or IPv6 brackets that do not frame the host (such as `[::1` or `::1]`). `Uri::assertValidHost()` rejected only control characters, so these malformed hosts were accepted both when parsing a URI string — including through `new Uri()`, an absolute-form request target passed to `Message::parseRequest()`, and the synthetic `SERVER_NAME` or `SERVER_ADDR` fallback used by `ServerRequest::fromGlobals()` — and when setting a host with `Uri::withHost()`. Because the stored host was not validated, `Uri::getHost()` could return a value that does not agree with the URI's authority or with the host that is actually used on the wire. For example, `Uri::withHost('good.com@evil.com')` is accepted, and `new Uri('http://[gggg::1]/')` produces a `getHost()` of `'[gggg:'` while `getAuthority()` returns `'[gggg::1'`.\n\nYou are affected if your application builds a `Uri` or calls `Uri::withHost()` with host data that is wholly or partly attacker-controlled and then relies on `Uri::getHost()` for a security or routing decision, such as host al","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.12.3"]}],"null_published_at":"2026-11-04T10:04:27.936Z","source_updated_at":"2026-07-21T18:35:26.000Z","source_disclosed_at":"2026-07-21T18:35:25.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.693Z"},{"id":"NVI-00007035","kind":"vulnerability","title":"guzzlehttp/psr7: Host Confusion via Weak URI Host Validation","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-c2w2-prh8-qm98","CVE-2026-59882"],"plain_summary":"OSV carries this publisher advisory for guzzlehttp/psr7. 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Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-59882","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-cc49d3e0e161ea028a2a56c88de0bbdb"],"technology":"guzzlehttp/psr7","known_exclusions":[],"conditions_summary":"### Impact\n\n`guzzlehttp/psr7` did not reject URI host components containing authority delimiters (`/`, `?`, `#`, `@`, or `\\`), an embedded port such as `host:8080`, or IPv6 brackets that do not frame the host (such as `[::1` or `::1]`). `Uri::assertValidHost()` rejected only control characters, so these malformed hosts were accepted both when parsing a URI string — including through `new Uri()`, an absolute-form request target passed to `Message::parseRequest()`, and the synthetic `SERVER_NAME` or `SERVER_ADDR` fallback used by `ServerRequest::fromGlobals()` — and when setting a host with `Uri::withHost()`. Because the stored host was not validated, `Uri::getHost()` could return a value that does not agree with the URI's authority or with the host that is actually used on the wire. For example, `Uri::withHost('good.com@evil.com')` is accepted, and `new Uri('http://[gggg::1]/')` produces a `getHost()` of `'[gggg:'` while `getAuthority()` returns `'[gggg::1'`.\n\nYou are affected if your application builds a `Uri` or calls `Uri::withHost()` with host data that is wholly or partly attacker-controlled and then relies on `Uri::getHost()` for a security or routing decision, such as host al","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.12.3"]}],"null_published_at":"2026-11-04T02:53:03.181Z","source_updated_at":"2026-07-21T18:46:10.537Z","source_disclosed_at":"2026-07-21T18:35:25.000Z","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":"2026-10-31T21:42:10.693Z"},{"id":"NVI-00007035","kind":"vulnerability","title":"guzzlehttp/psr7: Host Confusion via Weak URI Host Validation","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-c2w2-prh8-qm98","CVE-2026-59882"],"plain_summary":"OSV carries this publisher advisory for guzzlehttp/psr7. 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Because the stored host was not validated, `Uri::getHost()` could return a value that does not agree with the URI's authority or with the host that is actually used on the wire. For example, `Uri::withHost('good.com@evil.com')` is accepted, and `new Uri('http://[gggg::1]/')` produces a `getHost()` of `'[gggg:'` while `getAuthority()` returns `'[gggg::1'`.\n\nYou are affected if your application builds a `Uri` or calls `Uri::withHost()` with host data that is wholly or partly attacker-controlled and then relies on `Uri::getHost()` for a security or routing decision, such as host al","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.12.3"]}],"null_published_at":"2026-11-01T14:34:07.577Z","source_updated_at":"2026-07-21T18:46:10.537Z","source_disclosed_at":"2026-07-21T18:35:25.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.693Z"},{"id":"NVI-00007035","kind":"vulnerability","title":"guzzlehttp/psr7: Host Confusion via Weak URI Host Validation","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c2w2-prh8-qm98","CVE-2026-59882"],"plain_summary":"OSV carries this publisher advisory for guzzlehttp/psr7. 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This report has not examined your application.","related_sources":[{"id":"sr-cc49d3e0e161ea028a2a56c88de0bbdb","url":"https://github.com/advisories/GHSA-c2w2-prh8-qm98","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-c2w2-prh8-qm98","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.693Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-cc49d3e0e161ea028a2a56c88de0bbdb"],"technology":"guzzlehttp/psr7","known_exclusions":[],"conditions_summary":"### Impact\n\n`guzzlehttp/psr7` did not reject URI host components containing authority delimiters (`/`, `?`, `#`, `@`, or `\\`), an embedded port such as `host:8080`, or IPv6 brackets that do not frame the host (such as `[::1` or `::1]`). `Uri::assertValidHost()` rejected only control characters, so these malformed hosts were accepted both when parsing a URI string — including through `new Uri()`, an absolute-form request target passed to `Message::parseRequest()`, and the synthetic `SERVER_NAME` or `SERVER_ADDR` fallback used by `ServerRequest::fromGlobals()` — and when setting a host with `Uri::withHost()`. Because the stored host was not validated, `Uri::getHost()` could return a value that does not agree with the URI's authority or with the host that is actually used on the wire. For example, `Uri::withHost('good.com@evil.com')` is accepted, and `new Uri('http://[gggg::1]/')` produces a `getHost()` of `'[gggg:'` while `getAuthority()` returns `'[gggg::1'`.\n\nYou are affected if your application builds a `Uri` or calls `Uri::withHost()` with host data that is wholly or partly attacker-controlled and then relies on `Uri::getHost()` for a security or routing decision, such as host al","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.12.3"]}],"null_published_at":"2026-10-31T22:13:14.308Z","source_updated_at":"2026-07-21T18:46:10.537Z","source_disclosed_at":"2026-07-21T18:35:25.000Z","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":"2026-10-31T21:42:10.693Z"}],"next_cursor":null,"snapshot_revision":"42594"}