HOMEVULNERABILITIESCVE-2023-28119
HIGH

CVE-2023-28119

CWE-770Published: March 22, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

The crewjam/saml go library contains a partial implementation of the SAML standard in golang. Prior to version 0.4.13, the package's use of `flate.NewReader` does not limit the size of the input. The user can pass more than 1 MB of data in the HTTP request to the processing functions, which will be decompressed server-side using the Deflate algorithm. Therefore, after repeating the same request multiple times, it is possible to achieve a reliable crash since the operating system kills the process. This issue is patched in version 0.4.13.

NVD Source

Technical Analysis

CVE-2023-28119 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

saml_project1 product(s)
saml
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/crewjam/saml/commit/8e9236867d176ad6338c870a84e2039aef8a5021
PATCHhttps://github.com/crewjam/saml/commit/8e9236867d176ad6338c870a84e2039aef8a5021
ADVISORYhttps://github.com/crewjam/saml/security/advisories/GHSA-5mqj-xc49-246p
ADVISORYhttps://github.com/crewjam/saml/security/advisories/GHSA-5mqj-xc49-246p

All References (4)

→
https://github.com/crewjam/saml/commit/8e9236867d176ad6338c870a84e2039aef8a5021Patch
→
https://github.com/crewjam/saml/security/advisories/GHSA-5mqj-xc49-246pVendor Advisory
→
https://github.com/crewjam/saml/commit/8e9236867d176ad6338c870a84e2039aef8a5021Patch
→
https://github.com/crewjam/saml/security/advisories/GHSA-5mqj-xc49-246pVendor Advisory

Quick Facts

CVE IDCVE-2023-28119
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-770
CISA KEVNo
Affected1 vendor(s)
PublishedMar 22, 2023

Related CVEs (CWE-770)

CVE-2025-11832
9.8
CVE-2022-3439
9.8
CVE-2022-3456
9.8
CVE-2023-25156
9.8
CVE-2018-20033
9.8
CVE-2022-3273
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-28119 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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