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go-git: Maliciously crafted idx file can cause asymmetric memory consumption

CVSS 3.1 5.0 MEDIUMEUVD CVSS 3.1 5.0 CVSS 3.1 · [email protected] · Secondary 5.0 MEDIUMCVSS_V3 Publisher rating MODERATEFixed by github.com/go-git/go-git/v5 5.17.1osv · severity unknownFixed by github.com/go-git/go-git/v5 5.17.1KEV status unknown

cve-program · CVE-2026-34165

Published

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potentially exhausting available memory and resulting in a denial-of-service (DoS) condition. Exploitation requires write access to the local repository's .git directory, it order to create or alter existing .idx files. This issue has been patched in version 5.17.1.

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euvd · EUVD-2026-17449

Published

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potentially exhausting available memory and resulting in a denial-of-service (DoS) condition. Exploitation requires write access to the local repository's .git directory, it order to create or alter existing .idx files. This issue has been patched in version 5.17.1.

Read the publisher's advisory

nvd · CVE-2026-34165

Published

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potentially exhausting available memory and resulting in a denial-of-service (DoS) condition. Exploitation requires write access to the local repository's .git directory, it order to create or alter existing .idx files. This issue has been patched in version 5.17.1.

Read the publisher's advisory

osv · GHSA-jhf3-xxhw-2wpp

Published

### Impact A vulnerability has been identified in which a maliciously crafted `.idx` file can cause asymmetric memory consumption, potentially exhausting available memory and resulting in a Denial of Service (DoS) condition. Exploitation requires write access to the local repository's `.git` directory, it order to create or alter existing `.idx` files. ### Patches Users should upgrade to `v5.17.1`, or the latest `v6` [pseudo-version](https://go.dev/ref/mod#pseudo-versions), in order to mitigate this vulnerability. ### Credit The go-git maintainers thank @kq5y for finding and reporting this issue privately to the `go-git` project.

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osv · GO-2026-4910

Published

Maliciously crafted idx file can cause asymmetric memory consumption in github.com/go-git/go-git

Read the publisher's advisory

Affected versions, risk and source history

Exploitation and risk

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Risk history

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Advisory history

14 saved versions

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15 Nov 2026 10:06:42 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

13 Nov 2026 09:58:24 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

11 Nov 2026 09:27:28 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

9 Nov 2026 09:04:57 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

7 Nov 2026 08:27:39 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

5 Nov 2026 07:54:51 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

3 Nov 2026 06:59:57 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

1 Nov 2026 06:05:37 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

30 Oct 2026 05:49:44 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

28 Oct 2026 04:51:58 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

euvd · EUVD-2026-17449 · Published

25 Oct 2026 08:17:29 UTC

go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potent…

nvd · CVE-2026-34165 · Published

24 Oct 2026 13:19:41 UTC

go-git: Maliciously crafted idx file can cause asymmetric memory consumption

osv · GHSA-jhf3-xxhw-2wpp · Published

24 Oct 2026 13:19:41 UTC

Maliciously crafted idx file can cause asymmetric memory consumption in github.com/go-git/go-git

osv · GO-2026-4910 · Published

23 Oct 2026 15:48:27 UTC

go-git: Maliciously crafted idx file can cause asymmetric memory consumption

cve-program · CVE-2026-34165 · Published

ChangeIntel

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Sources read 15 Nov 12:11 UTC · 256 of 275 readable · 252 fully read · documentation 469/469 current