CVE-2026-58066Patch(rocket.chat / rocket.chat)

LOWCVSS 9.8 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch rocket.chat rocket.chat systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Rocket.Chat's SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user.

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-287

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

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

  • rocket.chat

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-08-01); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Products
rocket.chat

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-08-01: 1Mentions · 2026-09-04: 1Patch / Workaround · 2026-08-01: 1Technical Details · 2026-08-01: 108-0109-04
Signal classification2 categories
Patch
150.0%
General
150.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-08-011
Patch1
2026-09-041
General1
Full discourse2 posts
  • IntegSec@integ_sec
    General

    CVE-2026-58066: https://Rocket.Chat SAML SSO Authentication Bypass - What It Means for Your Business and How to Respond https://hubs.li/Q04wJx4L0

    Post summary

    The provided text references CVE-2026-58066 (a SAML SSO authentication bypass) via a link, but offers no PoC, exploit, active attack evidence, patches, or detailed technical information.

    0000020
    36 followersView on X
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Patch

    CVE-2026-58066 - Critical authentication bypass in Rocket Chat SAML SSO. CVSS 9.8. Upgrade to patched versions immediately. #CVE #RocketChat #infosec #devsecops #developer #cvealert #cybersecurity #developers #linux #git #github #gitlab #redteam #blueteam #linux https://www.valtersit.com/cve/CVE-2026-58066/

    Post summary

    The tweet highlights a critical authentication bypass CVE (CVE-2026-58066) in Rocket Chat SAML SSO and urges immediate patching.

    0000045
    978 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Approcket.chatrocket.chat---

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