SB2026072621 - Multiple vulnerabilities in Jira Service Management Data Center
Published: July 26, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 vulnerabilities.
1) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2026-42581)
CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform request smuggling.
The vulnerability exists due to improper input validation in HttpObjectDecoder when processing HTTP/1.0 requests containing both Transfer-Encoding: chunked and Content-Length headers. A remote attacker can send a specially crafted HTTP/1.0 request to perform request smuggling.
Exploitation requires Netty to be deployed behind a downstream proxy or handler that trusts Content-Length over Transfer-Encoding.
2) Prototype pollution (CVE-ID: CVE-2026-42044)
CWE-ID: CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes (\'Prototype Pollution\')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to tamper with JSON API responses.
The vulnerability exists due to prototype pollution in parseReviver in lib/defaults/index.js when parsing JSON responses. A remote attacker can pollute Object.prototype.parseReviver via another vulnerable library in the dependency tree to tamper with JSON API responses.
Exploitation requires a separate prototype pollution source in the application's dependency tree.
3) Inefficient regular expression complexity (CVE-ID: CVE-2025-69873)
CWE-ID: CWE-1333 - Inefficient Regular Expression Complexity
CVSSv4: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to the pattern keyword accepts runtime data via JSON Pointer syntax ($data reference), which is passed directly to the JavaScript RegExp() constructor without validation, when the $data option is enabled. A local user can can inject a malicious regex pattern (e.g., "^(a|a)*$") combined with crafted input to cause catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with each additional character doubling execution time. This enables complete denial of service with a single HTTP request against any API using ajv with $data: true for dynamic schema validation.
4) Path traversal (CVE-ID: CVE-2026-44705)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P/U:Amber
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences within unsanitized prefix/postfix. A remote attacker can send a specially crafted HTTP request and create arbitrary files on the system.
5) Improper Authentication (CVE-ID: CVE-2026-47838)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to impersonate another user.
The vulnerability exists due to improper authentication in SubjectDnX509PrincipalExtractor when processing malformed X.509 certificate CN values. A remote user can present a carefully crafted certificate to impersonate another user.
The issue can cause the extractor to read the wrong value for the username.
6) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-42198)
CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in SCRAM-SHA-256 authentication handling when processing a server-supplied PBKDF2 iteration count. A remote attacker can send a specially crafted SCRAM server-first-message with a very large iteration count to cause a denial of service.
The issue is triggered only when the client uses SCRAM-SHA-256 authentication and reaches a malicious, compromised, or attacker-controlled PostgreSQL endpoint.
7) Incorrect Regular Expression (CVE-ID: CVE-2022-37599)
CWE-ID: CWE-185 - Incorrect Regular Expression
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input passed via the resourcePath variable to interpolateName() function in interpolateName.js. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.8) Incorrect Regular Expression (CVE-ID: CVE-2022-37603)
CWE-ID: CWE-185 - Incorrect Regular Expression
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation when processing URL within the interpolateName() function in interpolateName.js. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
9) Path traversal (CVE-ID: CVE-2026-6321)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass path-based policy checks.
The vulnerability exists due to path traversal in the normalize() and equal() functions when processing percent-encoded path separators and dot segments in attacker-controlled URLs. A remote attacker can supply a specially crafted URL to bypass path-based policy checks.
Applications that normalize or compare attacker-controlled URLs to enforce path-based policy are affected.
10) Prototype pollution (CVE-ID: CVE-2026-29063)
CWE-ID: CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes (\'Prototype Pollution\')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to modify object prototype attributes in affected JavaScript objects.
The vulnerability exists due to improper input validation in the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() functions when processing user-supplied input containing __proto__ properties. A remote attacker can send a specially crafted object input to pollute the prototype of base objects, leading to unauthorized property injection and potential privilege escalation.
Prototype pollution occurs without affecting the global Object.prototype, but injected properties can still be accessed through object property lookups even if not visible via Object.keys().
11) Interpretation Conflict (CVE-ID: CVE-2026-6322)
CWE-ID: CWE-436 - Interpretation Conflict
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass host-based security checks and route requests to an unintended authority.
The vulnerability exists due to interpretation conflict in the URI host component when processing percent-encoded authority delimiters. A remote attacker can supply a specially crafted URL to bypass host-based security checks and route requests to an unintended authority.
This issue can affect applications that normalize untrusted URLs before host allowlist checks, redirect validation, or outbound request routing.
12) Prototype pollution (CVE-ID: CVE-2022-37601)
CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The disclosed vulnerability allows a remote attacker to perform prototype pollution attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data within the parseQuery() function in parseQuery.js. A remote attacker can inject and execute arbitrary JavaScript code.
Remediation
Install update from vendor's website.
References
- https://jira.atlassian.com/browse/JSDSERVER-16619
- https://jira.atlassian.com/browse/JSDSERVER-16612
- https://jira.atlassian.com/browse/JSDSERVER-16599
- https://jira.atlassian.com/browse/JSDSERVER-16653
- https://jira.atlassian.com/browse/JSDSERVER-16652
- https://jira.atlassian.com/browse/JSDSERVER-16654
- https://jira.atlassian.com/browse/JSDSERVER-16659
- https://jira.atlassian.com/browse/JSDSERVER-16658
- https://jira.atlassian.com/browse/JSDSERVER-16656
- https://jira.atlassian.com/browse/JSDSERVER-16660
- https://jira.atlassian.com/browse/JSDSERVER-16655
- https://jira.atlassian.com/browse/JSDSERVER-16657