VulnSocial

CVE-2026-105244

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 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

Improper Encoding or Escaping of Output vulnerability in the RemoteSyslogAppender of Apache log4net. Every character outside visible ASCII and space was removed from the record instead of being escaped, so non-ASCII text and control characters such as tabs disappeared without notice. A party whose data reaches a log message could make a distinct value look identical in the record, for example a user name holding a zero-width space logged as admin. Only applications that use RemoteSyslogAppender are affected. This issue affects Apache log4net: from 1.2.12 before 3.5.0. Users are recommended to upgrade to version 3.5.0, which fixes the issue.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-116

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-07: 110-07
Referenced assets1 URL
By indicator
Full discourse1 post
  • VulniPulse@vulnipulse

    CVE-2026-105244 | Apache log4net | Medium RemoteSyslogAppender output encoding/escaping vulnerability. Source published 6 Oct 2026. Details and official source: https://vulnipulse.com/advisories/apache-cve-2026-105244

    0000028
    6 followersView on X

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