CVE-2026-82880

High

Description

YaCy Search Server through 1.941 contains an XML external entity injection vulnerability in SVG, FreeMind, and OpenSearch parsers that fail to disable external entity resolution. Attackers can publish malicious documents with DOCTYPE declarations containing SYSTEM entities pointing to local files, causing the crawler to exfiltrate file contents into the searchable index.

SeverityHigh

CVSS7.5

Exploit probability—

ProductYacy Search Server

PublishedAug 31, 2026

First seenAug 31, 2026

Weakness typeCWE-611XML external entity (XXE)

How to fix

Patches

github.com/yacy/yacy_search_server/commit/3c3a307e8b7a0ebbc4d1e6b10898b52e15c0cd44

Affected products

Product	Affected versions	Fixed in
yacy yacy_search_server	v ≤ 1.941	—

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