VulnSocial

CVE-2025-13523Disclosure(mattermost / confluence)

LOWCVSS 5.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Mattermost Confluence plugin version <1.7.0 fails to properly escape user-controlled display names in HTML template rendering which allows authenticated Confluence users with malicious display names to execute arbitrary JavaScript in victim browsers via sending a specially crafted OAuth2 connection link that, when visited, renders the attacker's display name without proper sanitization. Mattermost Advisory ID: MMSA-2025-00557

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • confluence

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 1 mentions (2026-02-06); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
mattermost
Products
confluence

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-02-06: 1Mentions · 2026-02-11: 1Technical Details · 2026-02-06: 1Technical Details · 2026-02-11: 102-0602-11
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • CRAC Learning - Tech@cracbot
    Disclosure

    CVE-2025-13523 (CVSS:7.7, HIGH) is Awaiting Analysis. Mattermost Confluence plugin version &lt;1.7.0 fails to properly escape user-controlled display names in HTML template rend..https://nvd.nist.gov/vuln/detail/CVE-2025-13523 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    Post summary

    CVE-2025-13523 is a high‑severity vulnerability in the Mattermost Confluence plugin (version <1.7.0) that fails to escape user‑controlled display names in an HTML template, potentially allowing XSS; it is currently awaiting analysis.

    0000044
    171 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2025-13523 Mattermost Confluence plugin version &lt;1.7.0 fails to properly escape user-controlled display names in HTML template rendering which allows authenticated Confluence us… https://www.cve.org/CVERecord?id=CVE-2025-13523

    Post summary

    The text announces a new vulnerability (CVE‑2025‑13523) in Mattermost Confluence plugin that allows XSS due to improper escaping of user display names, but does not provide a PoC, exploit, patch, or evidence of active exploitation.

    00000168
    56.5K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmattermostconfluence-mattermost-

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