CVE-2026-115931: GitroomHQ postiz-app · Reflection Injection
Affects GitroomHQ postiz-appSource CVE Database V5
Not known to be exploited · CVSS 9.9 Critical : upgrade to 2.25.2 as a priority.
Data as of 29 Oct 2026, 19:15 UTC
Thin evidence
One scorer or none| CNA (postiz) | CVSS 3.1 | 9.9 |
|---|
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.25.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade GitroomHQ postiz-app to 2.25.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| GitroomHQpostiz-app | Affected
| Fixed in
|
GitHubpostiz-apppkg:github/postiz-appOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, restrict or disable self-registration to prevent unauthorized account creation. Limit user permissions to prevent invoking internal helper functions. Monitor for unusual backend process terminations and unauthorized file access attempts.
Description
Postiz lets a signed-in user ask the backend to run a function on one of their connected channels. The backend did not restrict which functions can be requested, so a user could call internal helper functions that were never meant to be reachable from the web interface. One of those helpers reads a file from the server's disk. A user who connects a channel whose stored token is a file path can have the backend return the contents of any file it can read, including its environment, which holds the secret used to sign login sessions, the database address and the credentials of connected services. Another helper makes the backend process exit with a single request. Self-registration is open by default, so no existing account and no action by another user is needed.
References
- github.com/gitroomhq/postiz-app (opens in a new tab)
- github.com/gitroomhq/postiz-app/releases/tag/v2.25.1 (opens in a new tab)
- github.com/gitroomhq/postiz-app/commit/9383f5be4d310c346e33a3748a9a7ded64c96fed (opens in a new tab)
- gadvisory.org/advisories/PSA-2026-JNXM56 (opens in a new tab)
- github.com/gitroomhq/postiz-app/releases/tag/v2.25.2 (opens in a new tab)