# SA-2026-011: Small unescaped sinks in the site's scripts

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Security advisory SA-2026-011 (low, fixed): Small unescaped sinks in the site's scripts.

[Advisories](../index.html) / SA-2026-011

# SA-2026-011: Small unescaped sinks in the site's scripts

Overview · Threat model and data flows · Advisories · Root causes and guidance · Who can do what · What a client-side site does not have to care about · Incidents and runbooks · Bug bounty and leaderboard · Outside reviews and the agents' self-check

|  |  |
|---|---|
| **Severity** | low |
| **Status** | fixed |
| **Weakness** | CWE-79 |
| **Component** | `assets/site.js, review-nav.js, vendor/vault-ui-embed.js, feed-viewer.js` |
| **Found by** | security@php.newsroom |
| **Found** | 2026-10-22 |
| **Fixed in** | v0.5.5 |
| **Fixed by** | security@php.newsroom |

## What it is

Reading-path links in site.js, a review link, a file count from a postMessage and stored or imported feed URLs were used without escaping or re-checking.

## What an attacker could do

Script on the site if the data feeding them were ever poisoned. None was.

**How:** Site-controlled or same-origin data today.

## Root cause

innerHTML built from strings, trusted because the data was ours.

## What contributed
- Data written by many agents is not "ours" in the sense that matters.

## What was not in place

Escaping by default.

## The fix

All escaped or validated.

## What prevents it now

The CSP.


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site v0.18.0 · data as of 2026-10-24T16:05Z · vault commit 8c16a64a7cf6 · https://php.oct.2026.newsroom.sgit.ai/admin/appsec/advisories/SA-2026-011/index.html