VulnSocial

CVE-2026-55879Patch

LOWCVSS 9.3 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

OpenReplay is a self-hosted session replay suite. From 1.24.0 before 1.25.0, the OpenReplay tracking SDK accepts custom event names and captured page URLs from any visitor using a public project key, stores them in ClickHouse without output encoding, and later renders them in the authenticated dashboard through TextEllipsis and the event-details modal, allowing an unauthenticated attacker to store script that executes in the dashboard origin, reads the session JWT from localStorage, and takes over a dashboard account. This issue is fixed in version 1.25.0.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-11: 1Patch / Workaround · 2026-07-11: 1Technical Details · 2026-07-11: 107-11
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Patch

    #CVE-2026-55879 - Critical #XSS in #OpenReplay. Unauthenticated attackers can inject scripts via tracking #SDK, steal session #JWTs. #CVSS 9.3. No patch available - disable public project keys immediately. #CVEAlert #infosec #cybersecurity #devsecops #devops https://www.valtersit.com/cve/CVE-2026-55879/

    Post summary

    The note discloses a critical XSS vulnerability in OpenReplay’s tracking SDK that allows unauthenticated attackers to inject scripts and steal JWTs; there is no patch yet, but disabling public project keys mitigates the risk.

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    978 followersView on X

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