CVE-2023-26267Network attack vector

Authenticated file disclosure via enabled external entities

Published Feb 21, 2023 · Updated Mar 14, 2025

XXE in php-saml-sp before 1.1.1 and 2.x before 2.1.1 allows remote authenticated users to read files as the webserver user. Its XML parsing path enables external entity resolution with LIBXML_DTDLOAD and LIBXML_DTDATTR, so crafted SAML XML can resolve local-file URIs. A user who can submit XML to an affected service can disclose files readable by the webserver account; integrity and availability are unaffected.

CVSS severity6.5
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in php-saml-sp before 1.1.1 and 2.x before 2.1.1 allows remote authenticated users to read files as the webserver user. Its XML parsing path enables external entity resolution with LIBXML_DTDLOAD and LIBXML_DTDATTR, so crafted SAML XML can resolve local-file URIs. A user who can submit XML to an affected service can disclose files readable by the webserver account; integrity and availability are unaffected.

The record

CVE
CVE-2023-26267
Published
Feb 21, 2023
Updated
Mar 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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