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  4. CVE 2026 63010 group office stored xss via manual reminders
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Back to active CVEs
High · CVSS 8.7CVE-2026-63010

Group-Office: Stored XSS via Manual RemindersCVE-2026-63010

Answer in brief

CVE-2026-63010 records a High severity (CVSS 8.7) vulnerability in Group-Office: Stored XSS via Manual Reminders. The current sources do not mark it as known exploited. The current feed maps Intermesh/groupoffice (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 10, 2026Updated Nov 10, 2026Source checked Nov 10, 2026First seen by HOL Nov 10, 2026Material review Nov 10, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Intermesh/groupoffice (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Intermesh/groupofficegeneric<6.8.172 || <25.0.108 || <26.0.336.8.172, 25.0.108, 26.0.33

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Intermesh/groupoffice.
  2. 2Review the reported fix. Update Intermesh/groupoffice to 6.8.172 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 10, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.172, 25.0.108, and 26.0.33, a low-privileged user can create manual reminders containing arbitrary HTML/JavaScript and assign them to any other user (including administrators). When the victim's browser polls for pending notifications, the payload renders unsanitized as innerHTML in the ExtJS notification panel, achieving Stored Cross-Site Scripting (XSS) leading to full Account Takeover (ATO) of the victim's session. This issue has been patched in versions 6.8.172, 25.0.108, and 26.0.33.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • GroupOffice Vulnerable to RCE in TemplateParser eval() via Contact/labelsSame intermesh/groupoffice package
  • Group-Office: SSRF via Bookmark/description JMAP action — server makes arbitrary HTTP(S) requests to user-controlled URL and reflects part of the responseSame intermesh/groupoffice package
  • Web::Simple versions before 0.037 for Perl do not escape single quotes in HTML::Tags outputAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-80, CWE-79
Source
CVE List V5
Source checked
Nov 10, 2026
References
4 linked sources
Open source record