CVE-2026-125389 json
Group-Office before 6.8.181, 25.0.116, and 26.0.58 Stored XSS via filterXSS Bypass
published 3d ago modified 2d ago also EUVD-2026-120552 , GHSA-52gw-p4j3-v53c
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository Intermesh/groupoffice. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
Intermesh Group-Office before 6.8.181, 25.0.116, and 26.0.58 contains a stored cross-site scripting vulnerability in the email viewer due to a flawed regex in StringHelper::filterXSS. Remote attackers can send emails containing tags like svg/onload, which MessagePanel.js renders raw, executing script in the recipient's session when opened.
Patch / fix
- Intermesh Group-Office 6.8.181, 25.0.116, 26.0.58
Is CVE-2026-125389 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Intermesh Group-Office
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/Intermesh/groupoffice/commit/8e9ff58807c5cfa71a34a48d80410479c1e7f9f5
patch
-
github.com
/Intermesh/groupoffice/commit/bfc1fba43de53a6f662b1a12e31447a9c65d4d00
patch
-
github.com
/Intermesh/groupoffice/commit/f32e9674b162342f0e4a43932f4adaf03e97c755
patch
-
github.com
/Intermesh/groupoffice/security/advisories/GHSA-52gw-p4j3-v53c
vendor-advisory, advisory
-
github.com
/Intermesh/groupoffice/blob/v26.0.57/www/go/base/util/StringHelper.php#L799
technical-description
-
vulncheck.com
/advisories/group-office-before-6.8.181-25.0.116-and-26.0.58-stored-xss-via-filterxss-bypass
third-party-advisory
Sources
- CVE List CVE-2026-125389
- NVD CVE-2026-125389
- Maintainer advisory GHSA-52gw-p4j3-v53c
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of Intermesh/groupoffice published their own advisory on GitHub. Reviewed sources take precedence over it.