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2 vulnerabilities found for jsdiff by kpdecker
CVE-2026-24001 (GCVE-0-2026-24001)
Vulnerability from nvd – Published: 2026-01-22 02:23 – Updated: 2026-06-30 12:06
VLAI
Title
jsdiff has a Denial of Service vulnerability in parsePatch and applyPatch
Summary
jsdiff is a JavaScript text differencing implementation. Prior to versions 8.0.3, 5.2.2, 4.0.4, and 3.5.1, attempting to parse a patch whose filename headers contain the line break characters `\r`, `\u2028`, or `\u2029` can cause the `parsePatch` method to enter an infinite loop. It then consumes memory without limit until the process crashes due to running out of memory. Applications are therefore likely to be vulnerable to a denial-of-service attack if they call `parsePatch` with a user-provided patch as input. A large payload is not needed to trigger the vulnerability, so size limits on user input do not provide any protection. Furthermore, some applications may be vulnerable even when calling `parsePatch` on a patch generated by the application itself if the user is nonetheless able to control the filename headers (e.g. by directly providing the filenames of the files to be diffed). The `applyPatch` method is similarly affected if (and only if) called with a string representation of a patch as an argument, since under the hood it parses that string using `parsePatch`. Other methods of the library are unaffected. Finally, a second and lesser interdependent bug - a ReDOS - also exhibits when those same line break characters are present in a patch's *patch* header (also known as its "leading garbage"). A maliciously-crafted patch header of length *n* can take `parsePatch` O(*n*³) time to parse. Versions 8.0.3, 5.2.2, 4.0.4, and 3.5.1 contain a fix. As a workaround, do not attempt to parse patches that contain any of these characters: `\r`, `\u2028`, or `\u2029`.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/kpdecker/jsdiff/security/advis… | x_refsource_CONFIRM |
| https://github.com/kpdecker/jsdiff/issues/653 | x_refsource_MISC |
| https://github.com/kpdecker/jsdiff/pull/649 | x_refsource_MISC |
| https://github.com/kpdecker/jsdiff/commit/15a1585… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-24001 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2431930 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| kpdecker | jsdiff |
Affected:
>= 6.0.0, < 8.0.3
Affected: >= 5.0.0, < 5.2.2 Affected: >= 4.0.0, < 4.0.4 Affected: < 3.5.1 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
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CVE-2026-24001 (GCVE-0-2026-24001)
Vulnerability from cvelistv5 – Published: 2026-01-22 02:23 – Updated: 2026-06-30 12:06
VLAI
Title
jsdiff has a Denial of Service vulnerability in parsePatch and applyPatch
Summary
jsdiff is a JavaScript text differencing implementation. Prior to versions 8.0.3, 5.2.2, 4.0.4, and 3.5.1, attempting to parse a patch whose filename headers contain the line break characters `\r`, `\u2028`, or `\u2029` can cause the `parsePatch` method to enter an infinite loop. It then consumes memory without limit until the process crashes due to running out of memory. Applications are therefore likely to be vulnerable to a denial-of-service attack if they call `parsePatch` with a user-provided patch as input. A large payload is not needed to trigger the vulnerability, so size limits on user input do not provide any protection. Furthermore, some applications may be vulnerable even when calling `parsePatch` on a patch generated by the application itself if the user is nonetheless able to control the filename headers (e.g. by directly providing the filenames of the files to be diffed). The `applyPatch` method is similarly affected if (and only if) called with a string representation of a patch as an argument, since under the hood it parses that string using `parsePatch`. Other methods of the library are unaffected. Finally, a second and lesser interdependent bug - a ReDOS - also exhibits when those same line break characters are present in a patch's *patch* header (also known as its "leading garbage"). A maliciously-crafted patch header of length *n* can take `parsePatch` O(*n*³) time to parse. Versions 8.0.3, 5.2.2, 4.0.4, and 3.5.1 contain a fix. As a workaround, do not attempt to parse patches that contain any of these characters: `\r`, `\u2028`, or `\u2029`.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/kpdecker/jsdiff/security/advis… | x_refsource_CONFIRM |
| https://github.com/kpdecker/jsdiff/issues/653 | x_refsource_MISC |
| https://github.com/kpdecker/jsdiff/pull/649 | x_refsource_MISC |
| https://github.com/kpdecker/jsdiff/commit/15a1585… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-24001 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2431930 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| kpdecker | jsdiff |
Affected:
>= 6.0.0, < 8.0.3
Affected: >= 5.0.0, < 5.2.2 Affected: >= 4.0.0, < 4.0.4 Affected: < 3.5.1 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
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