CVE-2026-39832

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 53% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss
Trending — Patch released this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

A fix is available — apply it.

When adding a key to a remote agent constraint extensions such as [email protected] were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity91% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

May 22, 2026

Last Modified

September 15, 2026

Advisory Details (12)

Auto-updated Sep 15, 2026
Patch available. Sources: redhat.
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:36648
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:36625
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:36319
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:36199
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:35833
generic

GO-2026-5006 - Go Packages

https://pkg.go.dev/vuln/GO-2026-5006
generic
https://groups.google.com/g/golang-announce/c/a082jnz-LvI
generic

x/crypto/ssh/agent: remote agent constraint extensions dropped · Issue #79435 · golang/go · GitHub

https://go.dev/issue/79435
generic
https://go.dev/cl/778641
generic
https://go.dev/cl/778640
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:36651
generic
https://go.dev/cl/778642

Vendor Advisories for CVE-2026-39832(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(27)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpodman-5:5.4.0-22.el9_6.52026-09-14redhat
redhatopenshift-logging/cluster-logging-rhel9-operator:17884395052026-09-10redhat
redhatcluster-observability-operator/cluster-observability-rhel9-operator:17875936372026-08-31redhat
redhatmulticluster-engine/cluster-image-set-controller-rhel9:17872597402026-08-25redhat
redhatmulticluster-engine/hypershift-addon-rhel9-operator:17869120062026-08-19redhat
redhatopenshift-gitops-1/argocd-rhel9:17852113462026-08-10redhat
redhatopenshift-gitops-1/argocd-rhel8:17851492602026-08-10redhat
redhatconforma-cli-stack-v1-4-1.4.32026-08-05redhat
redhatcontainer-tools:rhel8-8080020260721142025.63b345852026-08-04redhat
redhatoadp/oadp-velero-rhel9:17840588222026-07-22redhat
redhatquay/quay-rhel8:17843519662026-07-21redhat
redhatquay/quay-rhel8:17843539042026-07-21redhat
redhatquay/quay-rhel8:17837518652026-07-20redhat
redhatrhem/flightctl-worker-rhel10:17841949712026-07-16redhat
redhatquay/quay-rhel9:17839558462026-07-16redhat
redhatflightctl-0:1.1.3-1.el9em2026-07-16redhat
redhatquay/quay-rhel8:17837504472026-07-16redhat
redhatrhtas/gitsign-rhel9:17839598192026-07-16redhat
redhatopenshift-builds/openshift-builds-webhook-rhel9:17836121632026-07-16redhat
redhatrhem/flightctl-worker-rhel9:17841277752026-07-15redhat
redhatquay/quay-rhel8:17841258382026-07-15redhat
redhatodf4/rook-ceph-rhel9-operator:17829342842026-07-09redhat
redhatpodman-7:5.8.2-4.el10_22026-07-09redhat
redhatbuildah-2:1.43.1-3.el9_82026-07-09redhat
redhatpodman-6:5.8.2-4.el9_82026-07-09redhat
redhatrhtas/gitsign-rhel9:17833320612026-07-09redhat
redhatconforma-cli-stack-v1-4-1.4.22026-07-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
golang-go.crypto1:0.0~git20201221.eec23a3-1 ... 1:0.53.0-1 (40 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
golang-go.crypto1:0.10.0-1 ... 1:0.56.0-1 (36 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
golang-go.crypto1:0.25.0-1 ... 1:0.56.0-1 (21 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
golang-go.crypto1:0.25.0-1 ... 1:0.52.0-1~bpo13+1 (16 versions)1:0.52.0-1—
Go(1)
PackageVulnerable rangeFixed inDependents
golang.org/x/crypto—0.52.0—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(18)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 67× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 409 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-17 19:30 UTCEPSS rescore
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-15 12:30 UTCVendor advisory
  7. 2026-09-15 12:13 UTCEG score recompute
  8. 2026-09-15 12:13 UTCVendor advisory
  9. 2026-09-15 03:11 UTCEPSS rescore
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-12 15:01 UTCEPSS rescore
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-11 13:24 UTCVendor advisory
  14. 2026-09-11 12:21 UTCEG score recompute
  15. 2026-09-11 12:21 UTCVendor advisory
  16. 2026-09-11 09:37 UTCEPSS rescore
  17. 2026-09-10 13:38 UTCVendor advisory
  18. 2026-09-10 12:26 UTCEG score recompute
  19. 2026-09-10 12:26 UTCVendor advisory
  20. 2026-09-10 09:34 UTCEPSS rescore
  21. 2026-09-08 22:00 UTCEPSS rescore
  22. 2026-09-07 16:01 UTCEPSS rescore
  23. 2026-09-07 13:52 UTCVendor advisory
  24. 2026-09-07 12:41 UTCEG score recompute
  25. 2026-09-07 12:41 UTCVendor advisory
Show 75 more
  1. 2026-09-06 13:47 UTCEPSS rescore
  2. 2026-09-04 13:29 UTCVendor advisory
  3. 2026-09-04 12:21 UTCEG score recompute
  4. 2026-09-04 12:21 UTCVendor advisory
  5. 2026-09-04 05:06 UTCEPSS rescore
  6. 2026-09-02 14:12 UTCEPSS rescore
  7. 2026-09-02 13:41 UTCVendor advisory
  8. 2026-09-02 12:38 UTCEG score recompute
  9. 2026-09-02 12:38 UTCVendor advisory
  10. 2026-09-01 13:53 UTCEPSS rescore
  11. 2026-09-01 04:39 UTCEPSS rescore
  12. 2026-08-31 13:33 UTCVendor advisory
  13. 2026-08-31 12:30 UTCEG score recompute
  14. 2026-08-31 12:30 UTCVendor advisory
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-30 01:22 UTCEPSS rescore
  17. 2026-08-28 21:41 UTCEPSS rescore
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-26 16:24 UTCEG score recompute
  20. 2026-08-26 16:24 UTCVendor advisory
  21. 2026-08-26 14:46 UTCEPSS rescore
  22. 2026-08-26 12:21 UTCEG score recompute
  23. 2026-08-26 12:21 UTCVendor advisory
  24. 2026-08-25 13:49 UTCEPSS rescore
  25. 2026-08-25 13:24 UTCVendor advisory
  26. 2026-08-25 12:20 UTCEG score recompute
  27. 2026-08-25 12:20 UTCVendor advisory
  28. 2026-08-24 13:29 UTCVendor advisory
  29. 2026-08-24 12:25 UTCEG score recompute
  30. 2026-08-24 12:25 UTCVendor advisory
  31. 2026-08-24 00:18 UTCVendor advisory
  32. 2026-08-23 20:30 UTCVendor advisory
  33. 2026-08-23 16:42 UTCEG score recompute
  34. 2026-08-23 16:42 UTCVendor advisory
  35. 2026-08-23 00:19 UTCEPSS rescore
  36. 2026-08-22 01:32 UTCEG score recompute
  37. 2026-08-22 01:32 UTCVendor advisory
  38. 2026-08-21 23:49 UTCEPSS rescore
  39. 2026-08-21 21:42 UTCEG score recompute
  40. 2026-08-21 21:42 UTCVendor advisory
  41. 2026-08-20 22:55 UTCEPSS rescore
  42. 2026-08-20 18:40 UTCVendor advisory
  43. 2026-08-20 13:58 UTCVendor advisory
  44. 2026-08-20 12:43 UTCEG score recompute
  45. 2026-08-20 12:43 UTCVendor advisory
  46. 2026-08-19 17:03 UTCEPSS rescore
  47. 2026-08-18 13:48 UTCEPSS rescore
  48. 2026-08-18 12:40 UTCVendor advisory
  49. 2026-08-18 12:18 UTCEG score recompute
  50. 2026-08-18 12:18 UTCVendor advisory
  51. 2026-08-17 13:47 UTCEPSS rescore
  52. 2026-08-17 12:19 UTCVendor advisory
  53. 2026-08-17 12:12 UTCVendor advisory
  54. 2026-08-17 09:45 UTCVendor advisory
  55. 2026-08-16 16:49 UTCEG score recompute
  56. 2026-08-16 16:49 UTCVendor advisory
  57. 2026-08-16 14:56 UTCEPSS rescore
  58. 2026-08-16 10:57 UTCVendor advisory
  59. 2026-08-16 07:09 UTCVendor advisory
  60. 2026-08-16 03:21 UTCEG score recompute
  61. 2026-08-16 03:21 UTCVendor advisory
  62. 2026-08-16 02:14 UTCEPSS rescore
  63. 2026-08-15 01:35 UTCEG score recompute
  64. 2026-08-15 01:35 UTCVendor advisory
  65. 2026-08-15 01:30 UTCEPSS rescore
  66. 2026-08-14 21:47 UTCVendor advisory
  67. 2026-08-14 17:59 UTCVendor advisory
  68. 2026-08-14 13:27 UTCVendor advisory
  69. 2026-08-14 12:29 UTCVendor advisory
  70. 2026-08-14 09:30 UTCVendor advisory
  71. 2026-08-14 05:42 UTCVendor advisory
  72. 2026-08-14 01:54 UTCEG score recompute
  73. 2026-08-14 01:54 UTCVendor advisory
  74. 2026-08-13 22:00 UTCEPSS rescore
  75. 2026-08-13 08:04 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-39832?
CVE-2026-39832 is a critical vulnerability published on May 22, 2026. When adding a key to a remote agent constraint extensions such as [email protected] were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all…
When was CVE-2026-39832 disclosed?
CVE-2026-39832 was first published in the National Vulnerability Database on May 22, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39832 actively exploited?
CVE-2026-39832 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.6% of all scored CVEs.
What is the CVSS score of CVE-2026-39832?
CVE-2026-39832 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-39832?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39832, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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