VulnSocial

CVE-2026-42011Disclosure

LOWCVSS 7.4 · HIGH

Signal is active with 3 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

A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-295

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

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

What's happening

  • Technical details provided in 4 signals
  • Disclosure: 4 classified signals
  • Peaked at 3 mentions on most recent observed day (2026-06-09)
  • 4 total mentions across 2 days

Deep dive

Activity timeline4 mentions / 2d
01223Mentions · 2026-05-27: 1Mentions · 2026-06-09: 3Technical Details · 2026-05-27: 1Technical Details · 2026-06-09: 305-2706-09
Signal classification1 categories
Disclosure
4100.0%
Classification over time
DateTotalLabels
2026-05-271
Disclosure1
2026-06-093
Disclosure3
Full discourse4 posts
  • إبراهيم بوحيمد | Ibrahim Buhaimed@buhaimedi
    Disclosure

    صدرت اليوم ٨ ثغرات بتصنيف حرج او عالي الخطورة في مكتبة GnuTLS الي شرحتها في التغريده المقتبسه ـ📍 (CVE-2026-42010) تقييم (NVD): 🔴 9.8 (حرجة) تقييم (Red Hat): 🟠 7.1 (عالية) ـ📍 (CVE-2026-33845) تقييم (NVD): 🔴 9.1 (حرجة) تقييم (Red Hat): 🟠 7.5 (عالية) ـ📍 (CVE-2026-42013) تقييم (Red Hat): 🟠 8.2 (عالية) تصنيف (GnuTLS) الرسمي: 🟡 (متوسطة) ـ📍 (CVE-2026-5260) تقييم (Red Hat): 🟠 8.2 (عالية) ـ📍 (CVE-2026-33846) تقييم (Red Hat): 🟠 7.5 (عالية) ـ📍 (CVE-2026-42009) تقييم (Red Hat): 🟠 7.5 (عالية) ـ📍 (CVE-2026-3833) تقييم (NVD): 🟠 7.4 (عالية) تقييم (Red Hat): 🟡 6.5 (متوسطة) ـ📍 (CVE-2026-42011) تقييم (Red Hat / Ubuntu CVSS): 🟠 7.4 (عالية) أولوية (Ubuntu) الفعلية: 🟡 (متوسطة)

    Post summary

    The post announces multiple high‑severity GnuTLS vulnerabilities, providing their CVE identifiers and CVSS scores without mention of PoC, exploit code, or patches.

    03023124.3K
    50.0K followersView on X
  • Lyrie.ai@lyrie_ai
    Disclosure

    Red Hat disclosed CVE-2026-42011, a critical flaw in gnutls (CVSS 7.4) that silently bypasses certificate name constraints. An attacker can present fraudulent certificates that pass validation when prior Certificate Authorities had only exclusion rules—enabling MITM…

    Post summary

    Red Hat disclosed CVE‑2026‑42011, a critical gnutls flaw that silently bypasses certificate name constraints, enabling MITM attacks with forged certificates.

    1000036
    258 followersView on X
  • Lyrie.ai@lyrie_ai
    Disclosure

    CVE-2026-42011 · 7.4 → 3.1 The Name Constraint Escape: CVE-2026-42011 Breaks Certificate Validation in RHEL

    Post summary

    The text announces CVE‑2026‑42011, identifying it as a name‑constraint escape that compromises certificate validation in RHEL, without providing details of exploits, patches, or reports of active attacks.

    1000036
    258 followersView on X
  • Lyrie.ai@lyrie_ai
    Disclosure

    The Name Constraint Escape: CVE-2026-42011 Breaks Certificate Validation in RHEL Red Hat disclosed CVE-2026-42011, a critical flaw in gnutls CVSS 7.4 that silently bypasses certificate name constraints.

    Post summary

    Red Hat discloses CVE‑2026‑42011, a critical gnutls flaw that silently bypasses certificate name constraints; no PoC, exploit, or patch information is provided, so the focus is strictly on the vulnerability announcement.

    1000036
    258 followersView on X

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