CVE-2026-39833

criticalpriority · track · 0OT risk · elevatedEPSS 0.005 · 40 %ileDEEUFRRUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.47% (40th) EPSS
CVSS 9.1 · critical
Is it mine?
41 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.1
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.3–9.1

v3.19.1criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondaryexploitability 3.9 · impact 5.2
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · OSV
v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-862USprimaryCWE-862USCWE-862US
04

affected products (41)

Products and version ranges known to be affected.

showing 20 of 41
05

advisories (5)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-1653Golang Go-Module (Net, Image, Crypto: Mehrere SchwachstellenDeutsch2026-05-21csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um erweiterte Privilegien zu erlangen, Cross-Site-Scripting-Angriffe durchzuführen, Sicherheitsmaßnahmen zu umgehen oder einen Denial-of-Service-Zustand zu verursachen.

  • GHSA-jppx-rxg9-jmrxgolang.org/x/crypto doesn't enforce invoking key constraints2026-06-25ghsa · osvUS

    The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

  • CERTFR-2026-AVI-1366Multiples vulnérabilités dans les produits SplunkFrançais2026-10-22vendor · certfrFR
  • CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
  • GO-2026-5005Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent2026-05-22vendor · osvUS

    The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundcertfrNVDCVE.orgMITRE
published 2026-05-22modified 2026-10-08
09

references (14)

External citations — patches, advisories, analysis.

scry

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