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  4. CVE 2026 19880 incomplete protection against cve 2025 11226
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Back to active CVEs
Medium · CVSS 6.3CVE-2026-19880

Incomplete protection against CVE-2025-11226CVE-2026-19880

Answer in brief

CVE-2026-19880 records a Medium severity (CVSS 6.3) vulnerability in Incomplete protection against CVE-2025-11226. The current sources do not mark it as known exploited. The current feed maps QOS.CH Sarl/Logback-classic (generic), QOS.CH Sarl/Logback-classic (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 14, 2026Updated Aug 26, 2026Source checked Nov 13, 2026First seen by HOL Aug 14, 2026Material review Aug 26, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps QOS.CH Sarl/Logback-classic (generic), QOS.CH Sarl/Logback-classic (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
QOS.CH Sarl/Logback-classicgeneric>=0.9.14 <=1.6.2Not reported
QOS.CH Sarl/Logback-classicgeneric0.9.14Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for QOS.CH Sarl/Logback-classic, QOS.CH Sarl/Logback-classic.
  2. 2Review the reported fix. Source-reported solution: Update to logack version 1.6.3 or later. This vulnerability requires SiftingAppender to be active as well as unsanitized data provided by an attacker that MDCDiscriminator makes use of.  Sanitizing relevant data provided by the user should fix this vulnerability.

Evidence timeline and material changes

  1. Published upstream

    Aug 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 14, 2026

Sources and claim methodology

  • Source referencelogback.qos.ch
Upstream source description

Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java (logback-classic module) allows path-traversal vulnerability. More specifically, an MDC-based discriminator value flows unsanitized into a nested FileAppender path, letting an attacker who influences that MDC value (e.g. via an HTTP header) create and append log files outside the intended directory. This issue affects Logback-classic: from 0.9.14 through 1.6.2.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Path Traversal
EPSS
Not reported
CWE IDs
CWE-22
Source
CVE List V5
Source checked
Nov 13, 2026
References
1 linked source
Open source record