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UnratedFix available

Logback 1.5.35

Type: patchSources: Logback

Logback 1.5.35 rejects Unicode escape sequences in <if> condition attributes to block a bypass of the existing prohibition on the new operator. The announcement says version 1.5.37 provides the full fix.

Products
logback
Affected versions
Not specified
Fixed versions
1.5.35
CVEs
CVE-2026-13006
Confirmed fixed CVEs
Not specified
Updated in this feed
29 Oct 2026, 23:14 UTC · Revision 1

Source evidence

Logback 1.5.35

github-qos-ch-logback · Original source

Published 1 Jul 2026, 12:08 UTC

Logback 1.5.35 rejects Unicode escape sequences in <if> condition attributes to block a bypass of the existing prohibition on the new operator. The announcement says version 1.5.37 provides the full fix.

The 'condition' attribute in <if> elements now rejects unicode escape sequences (\u and \U). This closes a bypass of the existing prohibition on the new operator in Janino-evaluated conditions.

logback

Fixed versions: 1.5.35

Prerequisites: Janino-evaluated conditions

Complete source record
{
  "id": "2ab2742a9fa78635652b37b71e597b68494e5966db81f73d521d956dba647f69",
  "url": "https://github.com/qos-ch/logback/releases/tag/v_1.5.35",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "Logback 1.5.35",
    "summary": "Logback 1.5.35 rejects Unicode escape sequences in <if> condition attributes to block a bypass of the existing prohibition on the new operator. The announcement says version 1.5.37 provides the full fix.",
    "evidence": "The 'condition' attribute in <if> elements now rejects unicode escape sequences (\\u and \\U). This closes a bypass of the existing prohibition on the new operator in Janino-evaluated conditions.",
    "products": [
      {
        "name": {
          "value": "logback",
          "evidence": "Release notes from logback"
        },
        "prerequisites": [
          {
            "value": "Janino-evaluated conditions",
            "evidence": "in Janino-evaluated conditions"
          }
        ],
        "fixed_versions": [
          {
            "value": "1.5.35",
            "evidence": "Logback 1.5.35"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-13006",
        "evidence": "registered as CVE-2026-13006"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "github-qos-ch-logback",
  "document_id": 22344,
  "published_at": "2026-07-01T12:08:57+00:00"
}