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    2 vulnerabilities by kpdecker

    CVE-2026-24001 (GCVE-0-2026-24001)

    Vulnerability from nvd – Published: 2026-01-22 02:23 – Updated: 2026-02-03 16:03
    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
    2.7 (Low)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    • CWE-1333 - Inefficient Regular Expression Complexity
    Assigner
    References
    Impacted 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
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-24001 (GCVE-0-2026-24001)

    Vulnerability from cvelistv5 – Published: 2026-01-22 02:23 – Updated: 2026-02-03 16:03
    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
    2.7 (Low)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    • CWE-1333 - Inefficient Regular Expression Complexity
    Assigner
    References
    Impacted 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
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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