VulnSocial

CVE-2025-71407Disclosure

LOW

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

Rejected reason: This CVE ID has been rejected as a duplicate.

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0.5/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

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 2 signals
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-08-25); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-08-25: 1Mentions · 2026-08-30: 1Patch / Workaround · 2026-08-25: 1Patch / Workaround · 2026-08-30: 1Technical Details · 2026-08-25: 1Technical Details · 2026-08-30: 108-2508-30
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Classification over time
DateTotalLabels
2026-08-251
Disclosure1
2026-08-301
Patch1
Full discourse2 posts
  • Upwind Security MDR@UpwindMDR
    Disclosure

    🚨Critical - Nokogiri libxml2 DTD/XSD Validation Memory Corruption (CVE-2025-71407) In Nokogiri’s bundled libxml2, DTD validation error reporting overflows a stack buffer on long QName prefixes, and XML Schema validation can hit a use-after-free when parsing untrusted XSD. Remote attackers can feed malicious DTD/XSD via XML parsing/validation to crash the process or potentially achieve RCE. Non-validating XML parsing is not impacted. 👉Affected: nokogiri < 1.18.3 | Upgrade to 1.18.3

    Post summary

    The post announces a critical memory corruption vulnerability (CVE‑2025‑71407) in Nokogiri’s libxml2, detailing stack overflow and use‑after‑free conditions, and advises users to upgrade to version 1.18.3.

    0001084
    294 followersView on X
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 CRITICAL: CVE-2025-71407 (CVSS 9.8) Nokogiri &lt;1.18.3 vulnerable to stack buffer overflow &amp; use-after-free in libxml2. Remote attackers can achieve code execution via malicious DTD/XSD. Update immediately! #CVE #PatchNow #CyberSecurity https://t.co/8Jd6Q6Sxii

    Post summary

    The tweet highlights the critical CVE-2025-71407 affecting Nokogiri, urging users to promptly apply available patches, but it does not indicate the existence of a PoC, exploit tools, or active exploitation.

    0000045
    122 followersView on X

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