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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-39829

38
FAUCET Score

The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.

First published: May 22, 2026Last modified: May 22, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 0.52.0CPE matchmatch criteria
cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
37.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 16th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (25)

gopatch availablevia ghsa
Product: golang.org/x/cryptoFixed in: 0.52.0
microsoftpatch availablevia msrc
Product: 21299-17084Fixed in: 1.7.1-5
microsoftpatch availablevia msrc
Product: 21274-17084Fixed in: 25.0.3-18
microsoftpatch availablevia msrc
Product: 21418-17084Fixed in: 25.0.3-18
microsoftpatch availablevia msrc
Product: 20984-17084Fixed in: 1.12.15-8
microsoftpatch availablevia msrc
Product: 20985-17084Fixed in: 8.7.11-6
microsoftpatch availablevia msrc
Product: 21271-17084Fixed in: 0.14.0-13
microsoftpatch availablevia msrc
Product: 21278-17084Fixed in: 2.62.0-16
microsoftpatch availablevia msrc
Product: 21256-17084Fixed in: 1.30.10-25
microsoftpatch availablevia msrc
Product: azl3 cert-manager 1.12.15-6 on Azure Linux 3.0Fixed in: 1.12.15-8
microsoftpatch availablevia msrc
Product: azl3 cf-cli 8.7.11-5 on Azure Linux 3.0Fixed in: 8.7.11-6
microsoftpatch availablevia msrc
Product: azl3 docker-compose 2.27.0-9 on Azure Linux 3.0Fixed in: 2.27.0-11
microsoftpatch availablevia msrc
Product: azl3 gh 2.62.0-15 on Azure Linux 3.0Fixed in: 2.62.0-16
microsoftpatch availablevia msrc
Product: azl3 kubernetes 1.30.10-23 on Azure Linux 3.0Fixed in: 1.30.10-25
microsoftpatch availablevia msrc
Product: azl3 moby-engine 25.0.3-18 on Azure Linux 3.0Fixed in: 25.0.3-18
microsoftpatch availablevia msrc
Product: azl3 packer 1.9.5-13 on Azure Linux 3.0Fixed in: 1.9.5-14
microsoftpatch availablevia msrc
Product: azl3 telegraf 1.31.0-19 on Azure Linux 3.0Fixed in: 1.31.0-21
microsoftpatch availablevia msrc
Product: 21378-17084Fixed in: 1.30.10-25
microsoftpatch availablevia msrc
Product: 20966-17084Fixed in: 1.9.5-14
microsoftpatch availablevia msrc
Product: 21258-17084Fixed in: 1.31.0-21
microsoftpatch availablevia msrc
Product: azl3 kubernetes 1.30.10-25 on Azure Linux 3.0Fixed in: 1.30.10-25
microsoftpatch availablevia msrc
Product: azl3 kubevirt 1.7.1-2 on Azure Linux 3.0Fixed in: 1.7.1-5
microsoftpatch availablevia msrc
Product: azl3 moby-engine 25.0.3-17 on Azure Linux 3.0Fixed in: 25.0.3-18
microsoftpatch availablevia msrc
Product: 21272-17084Fixed in: 2.27.0-11
microsoftpatch availablevia msrc
Product: azl3 docker-buildx 0.14.0-11 on Azure Linux 3.0Fixed in: 0.14.0-13

Vendor Advisories (2)

goGHSA-w879-237q-wc7rhigh

golang.org/x/crypto: Invoking pathological RSA/DSA parameters may cause DoS

Jun 25, 2026
microsoft2026-May/CVE-2026-39829Important

Invoking pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh

May 12, 2026

References

access.redhat.com / errata/RHSA-2026:26546
access.redhat.com / errata/RHSA-2026:26547
access.redhat.com / errata/RHSA-2026:29455
access.redhat.com / errata/RHSA-2026:35833
access.redhat.com / errata/RHSA-2026:36199
access.redhat.com / errata/RHSA-2026:36207
access.redhat.com / errata/RHSA-2026:36319
access.redhat.com / errata/RHSA-2026:36625
access.redhat.com / errata/RHSA-2026:36648
access.redhat.com / errata/RHSA-2026:36651
access.redhat.com / errata/RHSA-2026:36796
access.redhat.com / errata/RHSA-2026:36797
access.redhat.com / errata/RHSA-2026:36808
access.redhat.com / errata/RHSA-2026:36820
access.redhat.com / errata/RHSA-2026:36883
access.redhat.com / errata/RHSA-2026:37072
access.redhat.com / errata/RHSA-2026:37123
access.redhat.com / errata/RHSA-2026:37268
access.redhat.com / errata/RHSA-2026:37271
access.redhat.com / errata/RHSA-2026:37272
access.redhat.com / errata/RHSA-2026:37278
access.redhat.com / errata/RHSA-2026:37286
access.redhat.com / errata/RHSA-2026:37296
access.redhat.com / errata/RHSA-2026:37387
access.redhat.com / errata/RHSA-2026:40118
access.redhat.com / errata/RHSA-2026:40262
access.redhat.com / errata/RHSA-2026:40945
access.redhat.com / errata/RHSA-2026:40969
access.redhat.com / errata/RHSA-2026:40972
access.redhat.com / errata/RHSA-2026:40974
access.redhat.com / errata/RHSA-2026:41019
access.redhat.com / errata/RHSA-2026:41031
access.redhat.com / errata/RHSA-2026:41036
access.redhat.com / errata/RHSA-2026:41055
access.redhat.com / errata/RHSA-2026:41066
access.redhat.com / errata/RHSA-2026:42146
access.redhat.com / errata/RHSA-2026:42796
access.redhat.com / errata/RHSA-2026:43052
access.redhat.com / errata/RHSA-2026:43692
access.redhat.com / security/cve/CVE-2026-39829
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-39829.json
go.dev / cl/781641
Issue Tracking
go.dev / cl/781661
Issue Tracking
go.dev / issue/79565
Issue Tracking
groups.google.com / g/golang-announce/c/a082jnz-LvI
Mailing List
pkg.go.dev / vuln/GO-2026-5018
Vendor Advisory