CVE-2026-34834
highpriority · track · 30EPSS 0.003 · 17 %ileEUUSEPSS · scored 2026-10-27
Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to version 1.4.10, the verifyIdentity() function contained logic that returned true if no session cookies were present. This allowed unauthenticated attackers to bypass security checks and access/modify user settings via the /api/settings endpoint by providing arbitrary headers. This issue has been patched in version 1.4.10.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/bulwarkmail/webmail/releasesPatchcnnvd
- https://github.com/bulwarkmail/webmail/releases/tag/1.4.10cnnvd
- https://github.com/bulwarkmail/webmail/security/advisories/GHSA-4356-876g-rfmhcnnvd
- https://github.com/bulwarkmail/webmail/releases/tag/1.4.10enisa_euvd
- https://github.com/bulwarkmail/webmail/security/advisories/GHSA-4356-876g-rfmhenisa_euvd
- https://github.com/bulwarkmail/webmail/releases/tag/1.4.10Productnvd
- https://github.com/bulwarkmail/webmail/security/advisories/GHSA-4356-876g-rfmhVendor Advisorynvd
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