CVE-2024-34580Known exploitationPublic exploit

SSRF via default external URI resolution

Published Jun 26, 2024 · Updated Aug 8, 2024

SSRF in Apache XML Security for C++ 2.0.4 and earlier allows attackers to issue server-originated HTTP requests via crafted XML signatures. The default XSECURIResolverXerces implementation dereferences attacker-controlled external reference URIs instead of rejecting them. Reachability requires an application to process untrusted XML signatures with the default resolver; requests can reach internal services, although Apache disputes the CVE as a configuration issue.

CVSS severity5.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

SSRF in Apache XML Security for C++ 2.0.4 and earlier allows attackers to issue server-originated HTTP requests via crafted XML signatures. The default XSECURIResolverXerces implementation dereferences attacker-controlled external reference URIs instead of rejecting them. Reachability requires an application to process untrusted XML signatures with the default resolver; requests can reach internal services, although Apache disputes the CVE as a configuration issue.

The record

CVE
CVE-2024-34580
Published
Jun 26, 2024
Updated
Aug 8, 2024
Vendor
SimpleSAMLphp
Product
xml-security
Classifications
CWE-918
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.0.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

SimpleSAMLphp · xml-securityversion=0 <=2.0.4

Published CVSS scores

5.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
5.3CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
5.3CISA ADP VulnrichmentCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo