VulnSocial

CVE-2026-74860Disclosure

LOWCVSS 8.5 · HIGH

Signal is active with 2 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 libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-763

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-09-08: 2Technical Details · 2026-09-08: 109-08
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets1 URL
By indicator
Full discourse2 posts
  • Upwind Security MDR@UpwindMDR
    Disclosure

    🚨High - libxml2 Python SAX double-free via DTD enumerated attributes (CVE-2026-74860) In libxml2 with Python bindings enabled, a crafted XML with a DTD using enumerated attribute values can trigger a double-free in the SAX attributeDecl callback during parsing. Memory corruption crashes Python apps using libxml2 SAX bindings (DoS). Non-Python builds are not impacted. 👉Affected: libxml2 (Python bindings), podman, container-tools:rhel8/podman, swift-lang, openshift/ose-rhel-coreos-8

    Post summary

    A newly disclosed CVE‑2026‑74860 in libxml2’s Python bindings results in a double‑free vulnerability that can cause a denial of service via crafted XML, with no exploitation or patch details disclosed.

    0000062
    303 followersView on X
  • VulDB 🛡@vuldb
    General

    There is a new vulnerability with elevated criticality in Red Hat Enterprise Linux and OpenShift Container Platform (CVE-2026-74860) https://vuldb.com/vuln/399781

    Post summary

    The post merely announces a new CVE affecting Red Hat Enterprise Linux and OpenShift Container Platform, without providing technical specifics, exploit code, or patch information.

    00000102
    2.3K followersView on X

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