Vulnerability · Published Oct 20, 2026 · Assigned by GitHub_M
CVE-2026-113669ApostropheCMS: Cross-domain session token in URL confers session takeover
Medium 5.3
In plain English
A medium-severity security flaw in apostrophe from apostrophecms. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0 of ApostropheCMS and 1.6.1 of passport-bridge, cross-host or cross-locale session migration places a single-use bearer session token in a redirect URL. A client that obtains and redeems a still-valid, unconsumed token before its first use can adopt the associated session, including through the passport-bridge cross-locale flow. This issue is fixed in ApostropheCMS 4.33.0 and passport-bridge 1.6.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @apostrophecms/passport-bridge | 1.6.1 | GHSA-hhvr-8m24-qqr3 |
| npm | apostrophe | 4.33.0 | GHSA-hhvr-8m24-qqr3 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| apostrophecms | apostrophe | < 4.33.0 |
| @apostrophecms | passport-bridge | < 1.6.1 |
Weakness: CWE-598 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
References
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-hhvr-8m24-qqr3 x_refsource_CONFIRM
- https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce x_refsource_MISC
- https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350 x_refsource_MISC
- https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe@4.33.0 x_refsource_MISC