BaselineWatch
Desk

CVE-2026-87863

unscored Awaiting Analysis

An authenticated HTTPS origin can supply an HSTS `max-age` value that the parser accepts, but time serialization later fails to process. On 64-bit systems, extreme max-age values compute an absolute expiry within standard time integer limits that exceeds calendar time structure bounds. During cache saves, the original HSTS file is truncated before writing a temporary replacement; when serialization fails, the temporary file is deleted, leaving an empty or partial cache. Because the save error is silently ignored during cleanup, curl exits successfully despite the data loss.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 3

  1. StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 17:21
  2. StatusReceived → PublishedNVD modified 2026-10-20 20:13
  3. First seenunscoredNVD modified 2026-10-20 21:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3