CVE-2026-33762— go-git: Missing validation decoding Index v4 files leads to panic
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I. Basic Information for CVE-2026-33762
Vulnerability Information
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Vulnerability Title
go-git: Missing validation decoding Index v4 files leads to panic
Source: NVD (National Vulnerability Database)
Vulnerability Description
go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git’s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
对数组索引的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
go-git 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
go-git是go-git开源的一个用纯 Go 编写的高度可扩展的 git 实现库。 go-git 5.17.1之前版本存在输入验证错误漏洞，该漏洞源于索引解码器在应用路径名前缀长度前未进行验证，可能导致解析恶意索引文件时触发越界切片操作和运行时崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-33762
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- Release v5.17.1 · go-git/go-git · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-33762
IV. Related Vulnerabilities
Same product: go-git
- CVE-2026-41506
go-git Credential leak via cross-host redirect in smart HTTP - CVE-2026-34165
go-git: Maliciously crafted idx file can cause asymmetric me - CVE-2026-25934
go-git improperly verifies data integrity values for .idx an - CVE-2025-21614
go-git clients vulnerable to DoS via maliciously crafted Git - CVE-2025-21613
go-git has an Argument Injection via the URL field
Same vendor: go-git
- CVE-2026-41506
go-git Credential leak via cross-host redirect in smart HTTP - CVE-2026-34165
go-git: Maliciously crafted idx file can cause asymmetric me - CVE-2026-25934
go-git improperly verifies data integrity values for .idx an - CVE-2025-21614
go-git clients vulnerable to DoS via maliciously crafted Git - CVE-2025-21613
go-git has an Argument Injection via the URL field
Same weakness: CWE-129
- CVE-2026-41643
GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4B - CVE-2026-40251
Incus out-of-bounds panic in snapshot metadata handling allo - CVE-2026-40886
Argo Workflows: Unchecked annotation parsing in pod informer - CVE-2026-6840
ONE 输入验证错误漏洞 - CVE-2026-40097
Step CA affected by an index out of bounds panic in TPM atte
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