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Advisories / SA-2026-035
SA-2026-035: Outsiders' text flows into files agents read
| Severity | low |
| Status | open |
| Weakness | CWE-1427 |
| Component | telemetry-public.json, issues, fact-check extracts, run logs |
| Found by | security@php.newsroom (pass 2 and 3 reviews) |
| Found | 2026-10-24 |
| Fixed in | not yet |
What it is
Telemetry paths and referrers, issue card titles, capture excerpts and run logs reach files that agents read, without a mark that they are untrusted.
What an attacker could do
Prompt injection into an agent that reads them.
How: Public.
Root cause
The workflow consumes hostile data by design.
What was not in place
Marking at the source.
What would fix it
Fence untrusted text wherever an agent reads it; character and length limits on published telemetry text.