synced 12 MIN AGO
01 Record

CVE-2026-33810

Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509

HighPUBLISHEDCNA: Go
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
View raw JSON

02 Description

Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.34% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 27.2% of scored records. A rank, not a probability.
NVD base score
8.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-09-18.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-08 01:06Z6 MO AGO
Last updated
2026-09-18 12:04Z1 MO AGO
Reserved
2026-03-23
Assigning CNA
Go
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weaknesses
  • CWE-295Improper Certificate ValidationBase
  • CWE-1289Improper Validation of Unsafe Equivalence in InputBase
Data version
5.2
Document digest
bcb6737c1f8727d22ff3940d385ac25ac2393803a753ccb9b9a25b3f4b1bc55f

05 Affected products

VendorProductVersionsPlatforms
Go standard librarycrypto/x5091.26.0-0 to < 1.26.2—

06 References

07 Fixed in

AlmaLinux 9

  • git-lfs
    Fixed in 3.7.1-4.el9_8
  • go-toolset
    Fixed in 1.26.2-1.el9_8
  • golang
    Fixed in 1.26.2-1.el9_8
  • golang-bin
    Fixed in 1.26.2-1.el9_8
  • golang-docs
    Fixed in 1.26.2-1.el9_8
  • golang-misc
    Fixed in 1.26.2-1.el9_8
  • golang-race
    Fixed in 1.26.2-1.el9_8
  • golang-src
    Fixed in 1.26.2-1.el9_8
  • golang-tests
    Fixed in 1.26.2-1.el9_8
  • opentelemetry-collector
    Fixed in 0.144.0-2.el9_8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • buildah
    Fixed in 2:1.43.1-5.el10_2
  • buildah-tests
    Fixed in 2:1.43.1-5.el10_2
  • go-fdo-client
    Fixed in 1.0.0-4.el10_2.7
  • go-fdo-server
    Fixed in 1.0.1-2.el10_2.4
  • go-fdo-server-manufacturer
    Fixed in 1.0.1-2.el10_2.4
  • go-fdo-server-owner
    Fixed in 1.0.1-2.el10_2.4
  • go-fdo-server-rendezvous
    Fixed in 1.0.1-2.el10_2.4
  • go-toolset
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-bin
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-docs
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-misc
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-race
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-src
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-tests
    Fixed in 1.26.2-2.el10_2.alma.1
  • opentelemetry-collector
    Fixed in 0.144.0-2.el10_2
  • podman
    Fixed in 7:5.8.2-9.el10_2.alma.1
  • podman-docker
    Fixed in 7:5.8.2-9.el10_2.alma.1
  • podman-remote
    Fixed in 7:5.8.2-9.el10_2.alma.1
  • podman-tests
    Fixed in 7:5.8.2-9.el10_2.alma.1
  • yggdrasil
    Fixed in 0.4.9.2-1.el10_2.2
  • yggdrasil-devel
    Fixed in 0.4.9.2-1.el10_2.2

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • git-lfs
    Fixed in 3.7.1-4.el9_8
  • go-toolset
    Fixed in 1.26.2-1.el9_8
  • golang
    Fixed in 1.26.2-1.el9_8
  • golang-bin
    Fixed in 1.26.2-1.el9_8
  • golang-docs
    Fixed in 1.26.2-1.el9_8
  • golang-misc
    Fixed in 1.26.2-1.el9_8
  • golang-race
    Fixed in 1.26.2-1.el9_8
  • golang-src
    Fixed in 1.26.2-1.el9_8
  • golang-tests
    Fixed in 1.26.2-1.el9_8
  • opentelemetry-collector
    Fixed in 0.144.0-2.el9_8

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • buildah
    Fixed in 2:1.43.1-5.el10_2
  • buildah-tests
    Fixed in 2:1.43.1-5.el10_2
  • go-fdo-client
    Fixed in 1.0.0-4.el10_2.7
  • go-fdo-server
    Fixed in 1.0.1-2.el10_2.4
  • go-fdo-server-manufacturer
    Fixed in 1.0.1-2.el10_2.4
  • go-fdo-server-owner
    Fixed in 1.0.1-2.el10_2.4
  • go-fdo-server-rendezvous
    Fixed in 1.0.1-2.el10_2.4
  • go-toolset
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-bin
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-docs
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-misc
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-race
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-src
    Fixed in 1.26.2-2.el10_2.alma.1
  • golang-tests
    Fixed in 1.26.2-2.el10_2.alma.1
  • opentelemetry-collector
    Fixed in 0.144.0-2.el10_2
  • podman
    Fixed in 7:5.8.2-9.el10_2.alma.1
  • podman-docker
    Fixed in 7:5.8.2-9.el10_2.alma.1
  • podman-remote
    Fixed in 7:5.8.2-9.el10_2.alma.1
  • podman-tests
    Fixed in 7:5.8.2-9.el10_2.alma.1
  • yggdrasil
    Fixed in 0.4.9.2-1.el10_2.2
  • yggdrasil-devel
    Fixed in 0.4.9.2-1.el10_2.2

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • golang-1.26
    Fixed in 1.26.2-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • golang-1.10
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • golang-1.10
    No fix yet
  • golang-1.6
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • golang-1.10
    No fix yet
  • golang-1.8
    No fix yet
  • golang-1.9
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • golang-1.13
    No fix yet
  • golang-1.14
    No fix yet
  • golang-1.18
    No fix yet
  • golang-1.20
    No fix yet
  • golang-1.21
    No fix yet
  • golang-1.22
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • golang-1.17
    No fix yet
  • golang-1.18
    No fix yet
  • golang-1.20
    No fix yet
  • golang-1.21
    No fix yet
  • golang-1.22
    No fix yet
  • golang-1.23
    No fix yet
  • golang-1.24
    No fix yet
  • golang-1.25
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • golang-1.21
    No fix yet
  • golang-1.22
    No fix yet
  • golang-1.23
    No fix yet
  • golang-1.24
    No fix yet
  • golang-1.25
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • golang-1.23
    No fix yet
  • golang-1.24
    No fix yet
  • golang-1.25
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • golang-1.23
    No fix yet
  • golang-1.24
    No fix yet
  • golang-1.25
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • golang-1.13
    No fix yet
  • golang-1.18
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • golang-1.13
    No fix yet
  • golang-1.16
    No fix yet
  • golang-1.18
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • golang-1.16
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 22.04 LTS

  • golang-1.13
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.