CVE-2026-93956 olivier-ls CVE debrief

Who should care

Defenders responsible for web applications using the olivier-ls PHP-FTS library should assess their exposure and prioritize upgrading to version 1.1.3 or applying the patch 0b2fae333d6b022da7ed4c43e2d41aa03f91dff3.

Why it matters

Defenders should prioritize upgrading to version 1.1.3 or applying the patch 0b2fae333d6b022da7ed4c43e2d41aa03f91dff3 to mitigate this cross-site scripting vulnerability in the olivier-ls PHP-FTS library.

• User interaction is required to exploit this vulnerability
• An attacker can inject malicious scripts, potentially leading to unauthorized actions
• The vulnerability has been publicly disclosed and an exploit has been made available
• Upgrading to version 1.1.3 or applying the patch 0b2fae333d6b022da7ed4c43e2d41aa03f91dff3 can mitigate this vulnerability

Technical summary

The SearchEngine::buildHighlights function in the olivier-ls PHP-FTS library up to version 1.1.2 is vulnerable to cross-site scripting attacks. An attacker can inject malicious scripts by manipulating the Query argument. This issue allows remote attackers to inject malicious scripts, potentially leading to unauthorized actions. The vulnerability has been publicly disclosed and an exploit has been made available. Upgrading to version 1.1.3 or applying the patch 0b2fae333d6b022da7ed4c43e2d41aa03f91dff3 can mitigate this vulnerability.

Defensive priority

Defenders should prioritize upgrading to version 1.1.3 or applying the patch 0b2fae333d6b022da7ed4c43e2d41aa03f91dff3 to mitigate this vulnerability.

Recommended defensive actions

• Upgrade to version 1.1.3 or later
• Apply the patch 0b2fae333d6b022da7ed4c43e2d41aa03f91dff3
• Implement input validation and sanitization for user-supplied input
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability was discovered in the olivier-ls PHP-FTS library, specifically in the SearchEngine::buildHighlights function. The issue is caused by inadequate input validation of the Query argument, allowing for cross-site scripting attacks.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.