CVE WatchSep 18, 2026

CVE-2026-77609

Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to vers

CVSS

6.1

Medium

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 18, 2026 · Last modified: Sep 18, 2026 · CWE-601

EPSS · 30d

Not enough EPSS history yet.

Technical description

Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, `Special:URIResolver` resolves its user-controlled subpage to a MediaWiki title and issues an HTTP 303 redirect to `$title->getFullURL()` without validating the resolved target. A crafted subpage can make that target point off-host: an interwiki prefix redirects to the foreign wiki (for example `Special:URIResolver/mw-3AFoo`, which decodes to `mw:Foo`, redirects to `https://www.mediawiki.org/wiki/Foo`), and where the resolved URL carries an authority the target can even embed `user:pass@host` credentials. The result is an open redirect to an attacker-influenced host, usable for phishing from a trusted wiki URL. Version 7.2.0 fixes the issue.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-938715.4 MED

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———Cotonti through 1.0.0 fails to validate redirect destinations in page bodies prefixed with redir:, allowing authenticated users with page creation or edit permissions to store redirects to arbitrary external hosts. Attackers can craft pages on trusted domains that redirect visitors to malicious sites for phishing attacks without administrative privileges.9h CVE-2026-938696.1 MED

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———Cotonti through 1.0.0 contains an open redirect vulnerability in the cot_url_check() function that validates redirect destinations using a regular expression lacking an end-of-string anchor. Attackers can bypass the redirect guard by supplying hostnames beginning with the site domain to redirect users to attacker-controlled hosts through the ratings plugin or other redirect callers.9h CVE-2026-773866.5 MED

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———Kyoo is a self-hosted media server focused on movies, series, and anime. Prior to 5.1.0, an unauthenticated attacker could initiate the OIDC login flow with an attacker-controlled redirectUrl. The login handling in auth/oidc.go stored that URL with the opaque login state, and /auth/oidc/logged/{provider} appended the provider, token, and error values before redirecting the victim's browser without validating the destination. Because the one-use token was not bound to the browser session that initiated login, an attacker who induced a victim to complete OIDC authentication could capture the token at the attacker-controlled destination and exchange it through /auth/oidc/callback/{provider} for the victim's Kyoo session. This issue is fixed in version 5.1.0.11h CVE-2026-653887.5 HIG

19.8%

——6A remote attacker who controls a container registry may be able to direct a client's token request to a host of the attacker's choice, and disclose the victim's registry credentials to that host. This vulnerability is addressed in containerization version 0.41.0.12h CVE-2026-921414.3 MED

25.6%

——8Jenkins Keycloak Authentication Plugin 2.4.1 and earlier does not restrict the redirect URL after login, allowing attackers to perform phishing attacks.16h CVE-2026-922164.3 MED

38.0%

——11A vulnerability was found in a2ui-project a2ui up to 0.10.7. Affected by this issue is the function openUrl of the file renderers/web_core/src/v0_9/rendering/generic-binder.ts of the component Binder. The manipulation results in open redirect. It is possible to launch the attack remotely. The project was informed of the problem early through an issue report but has not responded yet.2d