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NVD / CVE Program· CNA GitHub_M

CVE-2026-25934: go-git improperly verifies data integrity values for .idx and .pack files

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: go-git go-git 5.16.5.

Low priority for now. Upgrade to go-git go-git 5.16.5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

go-git is a highly extensible git implementation library written in pure Go. Prior to 5.16.5, a vulnerability was discovered in go-git whereby data integrity values for .pack and .idx files were not properly verified. This resulted in go-git potentially consuming corrupted files, which would likely result in unexpected errors such as object not found. For context, clients fetch packfiles from upstream Git servers. Those files contain a checksum of their contents, so that clients can perform integrity checks before consuming it. The pack indexes (.idx) are generated locally by go-git, or the git cli, when new .pack files are received and processed. The integrity checks for both files were not being verified correctly. This vulnerability is fixed in 5.16.5.

MediumCVSS 4.3 · v3.1—No exploit Fix available
Published
Feb 9, 2026
Updated
Jun 17, 2026
EPSS
0.1% · 4th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
4.3
CNA · GitHub_M
4.3
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-25934

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
go-git projectgo-git

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • go-git project go-gitbefore 5.16.5

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • go-git go-git

    • < 5.16.5affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12golang-github-go-git-go-gitfrom 0—
Debian:14golang-github-go-git-go-gitbefore 5.17.0-15.17.0-1
Gogithub.com/go-git/go-gitfrom 0—
Gogithub.com/go-git/go-git/v4from 0—
Gogithub.com/go-git/go-git/v5before 5.16.55.16.5
openSUSE:Leap 15.6terraform-provider-localbefore 2.0.0-150200.6.8.12.0.0-150200.6.8.1
openSUSE:Leap 15.6terraform-provider-nullbefore 3.0.0-150200.6.12.13.0.0-150200.6.12.1
openSUSE:Leap 15.6terraform-provider-randombefore 3.0.0-150200.6.6.23.0.0-150200.6.6.2
openSUSE:Leap 15.6terraform-provider-tlsbefore 3.0.0-150200.5.6.23.0.0-150200.5.6.2
openSUSE:Leap 16.0amazon-ssm-agentbefore 3.3.4624.0-160000.1.13.3.4624.0-160000.1.1
openSUSE:Tumbleweedalloybefore 1.15.1-1.11.15.1-1.1
openSUSE:Tumbleweedamazon-ssm-agentbefore 3.3.5226.0-1.13.3.5226.0-1.1
openSUSE:Tumbleweedtrivybefore 0.70.0-1.10.70.0-1.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7alloybefore 1.16.1-150700.15.20.11.16.1-150700.15.20.1
SUSE:Linux Enterprise Module for Public Cloud 12amazon-ssm-agentbefore 3.3.4624.0-4.49.13.3.4624.0-4.49.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4amazon-ssm-agentbefore 3.3.4624.0-150000.5.37.13.3.4624.0-150000.5.37.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4terraform-provider-awsbefore 3.11.0-150200.6.18.13.11.0-150200.6.18.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4terraform-provider-azurermbefore 2.32.0-150200.6.12.12.32.0-150200.6.12.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4terraform-provider-externalbefore 2.0.0-150200.6.12.12.0.0-150200.6.12.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4terraform-provider-googlebefore 3.43.0-150200.6.12.13.43.0-150200.6.12.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4terraform-provider-helmbefore 2.9.0-150200.6.23.12.9.0-150200.6.23.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4terraform-provider-kubernetesbefore 1.13.2-150200.6.12.11.13.2-150200.6.12.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4terraform-provider-localbefore 2.0.0-150200.6.17.12.0.0-150200.6.17.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP4terraform-provider-localbefore 2.0.0-150200.6.8.12.0.0-150200.6.8.1

+7

Same product

go-git project: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-49569Maliciously crafted Git server replies can lead to path traversal and RCE on go-git clients
    39Monitor
  • CVE-2025-21613go-git has an Argument Injection via the URL field
    36Monitor
  • CVE-2025-21614go-git clients vulnerable to DoS via maliciously crafted Git server replies
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-49568Jan 12, 2024 · Maliciously crafted Git server replies can cause DoS on go-git clients
    30Monitor
  • Later →CVE-2026-33762Mar 31, 2026 · go-git: Missing validation decoding Index v4 files leads to panic
    11Monitor
  • Later →CVE-2026-34165Mar 31, 2026 · go-git: Maliciously crafted idx file can cause asymmetric memory consumption
    20Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
go-git go-git5.16.5 · descriptionVendor (CNA)
debian:golang-github-go-git-go-git5.17.0-1 · Debian:14Package registry (OSV)
Go:github.com/go-git/go-git/v55.16.5Package registry (OSV)
opensuse:alloy1.15.1-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:amazon-ssm-agent3.3.5226.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:terraform-provider-local2.0.0-150200.6.8.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:terraform-provider-null3.0.0-150200.6.12.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:terraform-provider-random3.0.0-150200.6.6.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:terraform-provider-tls3.0.0-150200.5.6.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:trivy0.70.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:alloy1.16.1-150700.15.20.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:amazon-ssm-agent3.3.4624.0-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:terraform-provider-aws3.11.0-150200.6.18.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-azurerm2.32.0-150200.6.12.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-external2.0.0-150200.6.12.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-google3.43.0-150200.6.12.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-helm2.9.0-150200.6.23.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-kubernetes1.13.2-150200.6.12.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-local2.0.0-150200.6.8.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-null3.0.0-150200.6.12.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-random3.0.0-150200.6.6.2 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)
suse:terraform-provider-tls3.0.0-150200.5.6.2 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-354 · Improper Validation of Integrity Check Value

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records