CVE-2026-59083VulnerabilityPublished 30 Jul 2026Updated 10 Nov 2026

SUSE · Security update for tomcat10

Affects SUSESource GCVE Database

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Mentioned vulnerabilities

CVE-2026-59084

Authoritative record:CVE-2026-59083· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical.

Data as of 10 Nov 2026, 20:06 UTC

CVSS 3.1 base score

9.1Critical

How severe the flaw is on the 0–10 CVSS scale.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 14 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Apache Software FoundationApache Tomcat	Affected >=11.0.0-M1 <=11.0.23 >=10.1.0-M1 <=10.1.56 >=9.0.0.M1 <=9.0.119 >=8.5.0 <=8.5.100	Fixed in–
Mavenorg.apache.tomcat/tomcat`pkg:maven/org.apache.tomcat/tomcat`Other threats	Affected =11.0.0-M1 <=11.0.23 =10.1.0-M1 <=10.1.56 <=9.0.119 >=8.5.0 <=8.5.100	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

This update for tomcat10 fixes the following issues: Update to Tomcat 10.1.57. Security issues fixed: - CVE-2026-59083: incorrect URL decoding in `RewriteValve` may allow security control bypass (bsc#1271397). - CVE-2026-59084: `EncryptInterceptor` requirements are not clearly documented (bsc#1271398). Other updates and bugfixes: - Tomcat 10.1.57: * Catalina + Fix: Avoid a race condition with concurrent lookups for a singleton JNDI resource. (markt) + Fix: Improve the performance of range validation for the default servlet. (markt) + Fix: Avoid NPE in RewriteValve. (markt) + Fix: 70127: Fix use of Bootstrap through reflection by restoring the public constructor. Use through scripts was not affected. (remm) + Fix: Restore ability to extend many element classes from AbstractAccessLogValve. (remm) + Fix: Align DIGEST authentication with RFC 7616 and require clients to provide a valid qop parameter. (markt) + Fix: Use Files API to create temporary docBase when antiLockingDocBase is enabled. (markt) + Fix: Improve validation of configuration when DataSourceRealm starts. (remm) + Fix: JAASRealm should do a logout if login does not fail outright but does not produce a Principal. (remm) + Fix: Various edge cases for SSI substitutions, quoting and escaping. + Fix: unintentional conversion of literal + to a space during rule processing in the RewriteValve. (markt) * Coyote + Fix: Avoid a potential JVM crash if a suitable version of Tomcat Native is not available when the connector is explicitly configured to use Tomcat Native with OpenSSL for TLS. (markt) * Jasper + Fix: 70120: The fix for 69399 (itself a fix for a regression in the fix for 69333) was incomplete and tags that threw exceptions in doStartTag() and doEndTag() were incorrectly re-used. This fix prevents tags from being re-used if such an exception occurs. (markt) + Fix: 70135: Fix security classload regression. (remm) + Add: support for specifying Java 28 (with the value 28) as the compiler source and/or compiler target for JSP compilation. If used with an Eclipse JDT compiler version that does not support these values, a warning will be logged and the default will be used. (markt) * WebSocket + Fix: 70126: Fix WebSocket extension permessage-deflate so that it does not drop bytes if a compressed message inflates to more than the available buffer. Fix written by GPT-5.5. Test case written by Hironori Ichimiya. (markt) + Fix: Optimise WebSocket client processing of server responses during WebSocket HTTP upgrade process. (markt) * Other + Update: Byte Buddy to 1.18.9. (markt) + Update: UnboundID to 7.0.5. (markt) + Update: JaCoCo to 0.8.15. (markt) + Update: BND to 7.3.0. (markt) + Add: Improvements to French translations. (remm) + Add: Improvements to Japanese translations provided by tak7iji. (markt)

References

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