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Medium, CVSS 6.9amended

Go JOSE: Panics in JSON parsing

CVE-2026-116586GHSA-vvm8-gf78-28g4

What to do

Partial vendor fix. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Go github.com/go-jose/go-jose/v3

    Affected
    <= 3.0.5
    Fixed in
    no fixed version recorded

  • Go github.com/go-jose/go-jose/v4

    Affected
    < 4.1.5
    Fixed in
    4.1.5

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
6.9 · 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 · score source
EPSS
  • CVE-2026-116586: 0.29% estimated exploitation activity in the next 30 days; percentile 21.81 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary Parsing deeply nested JSON structures can hit Go's stack limit, causing the application to crash. Note: this advisory is the same as https://github.com/go-jose/go-jose/security/advisories/GHSA-6mp9-8xrw-74r4.

Impact Denial of service vulnerability. Any application that parses untrusted JSON via go-jose is exposed.

Workarounds Reject large inputs before parsing them.

Acknowledgements Thanks to Dohyun Kim (@azza999), Joshua Rogers of AISLE Research, and Sueun Cho for alerting us to the need to patch this.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from osv record GHSA-vvm8-gf78-28g4

  2. Revision 1 · created ·

    Published from ghsa record GHSA-vvm8-gf78-28g4

Agent brief

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# Patch Next advisory brief: CVE-2026-116586

Advisory: Go JOSE: Panics in JSON parsing
IDs: CVE-2026-116586, GHSA-vvm8-gf78-28g4
Record: https://patchnext.com/advisories/cve-2026-116586 (revision 2, source checked 29 Oct 2026, 06:45 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: github.com/go-jose/go-jose/v4 4.1.5. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/go-jose/go-jose/v3: affected <= 3.0.5
- Go github.com/go-jose/go-jose/v4: affected < 4.1.5; fixed in 4.1.5

## Suggested inspection (read-only)
- Go github.com/go-jose/go-jose/v3: check the installed version with your package manager.
- Go github.com/go-jose/go-jose/v4: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/go-jose/go-jose/v3, github.com/go-jose/go-jose/v4.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-vvm8-gf78-28g4 (GitHub-reviewed advisory GHSA-vvm8-gf78-28g4 lists affected ranges: Go github.com/go-jose/go-jose/v4 >=0 =0 <=3.0.5)
- Verified: https://osv.dev/vulnerability/GHSA-vvm8-gf78-28g4 (OSV record GHSA-vvm8-gf78-28g4 lists affected ranges: Go github.com/go-jose/go-jose/v4 >=0 =0 <=3.0.5)

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