CVE-2026-34483 (GCVE-0-2026-34483)
Vulnerability from cvelistv5 – Published: 2026-04-09 19:30 – Updated: 2026-04-09 23:15
VLAI?
Title
Apache Tomcat: Incomplete escaping of JSON access logs
Summary
Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.40 through 9.0.116.
Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117 , which fix the issue.
Severity ?
No CVSS data available.
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.20
(semver)
Affected: 10.1.0-M1 , ≤ 10.1.53 (semver) Affected: 9.0.40 , ≤ 9.0.116 (semver) Affected: 8.5.84 , ≤ 8.5.100 (semver) Unaffected: 0 , ≤ 8.5.83 (semver) |
Credits
Bartlomiej Dmitruk, striga.ai
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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