CVE-2026-116213: Webasyst Framework through 4.4.0 Arbitrary File Read via waArchiveTar Symlinks

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-26 · updated 2026-10-26
Weakness: CWE-59

Description

Webasyst Framework through 4.4.0 contains an arbitrary file read vulnerability in waArchiveTar::writeItem() that creates symlinks from theme archives without validating link targets. Authenticated users with theme management rights can upload themes containing symlinks to wa-config/db.php or /etc/passwd and read them through the public theme path.

Affected products

Webasyst Framework: through 4.4.0

References

https://github.com/webasyst/webasyst-framework
https://github.com/webasyst/webasyst-framework/blob/cc609e5db23e68d982e15ebf65bf9d25120333af/wa-system/file/waArchiveTar.class.php#L1243-L1250
https://github.com/webasyst/webasyst-framework/blob/cc609e5db23e68d982e15ebf65bf9d25120333af/wa-system/file/waTheme.class.php#L2609-L2660
https://github.com/webasyst/webasyst-framework/issues/396
https://www.vulncheck.com/advisories/webasyst-framework-through-4.4.0-arbitrary-file-read-via-waarchivetar-symlinks

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