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CVE-2023-26483

19
FAUCET Score

CVE-2023-26483 is a Denial of Service vulnerability affecting gosaml2, a Pure Go SAML 2.0 implementation. Attackers can craft a specially deflated SAML request that, when processed, consumes significantly more memory than its original size, potentially leading to memory exhaustion and process termination. This vulnerability has a CVSS score of 5.3 (Medium) due to its network-based attack vector and low attack complexity, resulting in a potential loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.0CPE matchmatch criteria
cpe:2.3:a:gosaml2_project:gosaml2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.96%
Probability of exploitation in next 30 days
EPSS Percentile
58.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0096 is in the 36th percentile among its peer group of 23,725 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/russellhaering/gosaml2Fixed in: 0.9.0
redhatno patchvia redhat_api
Product: Red Hat Advanced Cluster Security 3Fixed in: advanced-cluster-security/rhacs-main-rhel8
redhatno patchvia redhat_api
Product: Red Hat Advanced Cluster Security 3Fixed in: advanced-cluster-security/rhacs-roxctl-rhel8
redhatno patchvia redhat_api
Product: Red Hat Advanced Cluster Security 3Fixed in: advanced-cluster-security/rhacs-scanner-rhel8

Vendor Advisories (2)

redhatCVE-2023-26483Moderate

gosaml2: Denial of service via `deflate`-compressed request

Mar 4, 2023
goGHSA-6gc3-crp7-25w5medium

gosaml2 vulnerable to Denial Of Service Via Deflate Decompression Bomb

Mar 2, 2023

References

github.com / russellhaering/gosaml2/commit/f9d66040241093e8702649baff50cc70d2c683c0
Patch
github.com / russellhaering/gosaml2/releases/tag/v0.9.0
Release Notes
github.com / russellhaering/gosaml2/security/advisories/GHSA-6gc3-crp7-25w5
Vendor Advisory
pkg.go.dev / vuln/GO-2023-1602
Third Party Advisory