Group-Office before 6.8.181, 25.0.116, and 26.0.58 Stored XSS via filterXSS Bypass
- Exploited
- No known exploitation
- Fix
- Fixed in 6.8.181, 25.0.116, 26.0.58
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 6.8.181, 25.0.116, 26.0.58.
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 12/100 · provisional
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure7/25Reachable over the network without a login · Unknown: No advisory context yet
- Reach?/20Unknown. No tracked technology or package matched
- Severity5.3/10CVSS 5.3
- No patch0/5No signal
What would change the score
- Would score about 67 if added to CISA KEV
- Would score about 62 if CISA's SSVC rates exploitation active
- Would score about 27 if advisories confirm default setups are exposed
What to do
Upgrade to a fixed version: 6.8.181, 25.0.116, 26.0.58.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Intermesh Group-Office
fixed in 6.8.181; From 25.0.0 · fixed in 25.0.116; From 26.0.0 · fixed in 26.0.58
Evidence 6
- Advisory
- Patch
- Patch
- Patch
- Repository
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-125389
Is CVE-2026-125389 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-125389?
Group-Office: before 6.8.181; from 25.0.0 before 25.0.116; from 26.0.0 before 26.0.58.Source: cve.now feed data
How do I fix CVE-2026-125389?
Upgrade to a fixed version: 6.8.181, 25.0.116, 26.0.58.Source: cve.now feed data