CVE-2026-40042

CRITICAL 9.8

Pachno 1.0.6 Wiki TextParser XML External Entity Injection

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

Pachno 1.0.6 contains an XML external entity injection vulnerability that allows unauthenticated attackers to read arbitrary files by exploiting unsafe XML parsing in the TextParser helper. Attackers can inject malicious XML entities through wiki table syntax and inline tags in issue descriptions, comments, and wiki articles to trigger entity resolution via simplexml_load_string() without LIBXML_NONET restrictions.

CWE	CWE-403
Vendor	pancho
Product	pachno
Published	Apr 13, 2026
Last Updated	Apr 14, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

pancho / Pachno

1.0.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

zeroscience.mk: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5984.php vulncheck.com: https://www.vulncheck.com/advisories/pachno-wiki-textparser-xml-external-entity-injection

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab