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Advisory record · GHSA-vvwv-h69m-wg6f

XXE in PHPSpreadsheet due to incomplete fix for previous encoding issue

CVSS 8.8 HighEPSS 0.013 · 71st percentile

Published by the GitHub Advisory Database at 20 Nov 2019, 01:39 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
phpoffice/phpspreadsheetPackagist<1.8.01.8.0
phpoffice/phpexcelPackagist<=1.8.2No fixed version yet
Identifiers
GHSA-vvwv-h69m-wg6f · CVE-2019-12331 · PKSA-hn36-2kk8-hb3y · PKSA-zdkr-vbc6-f2vy
Weakness (CWE)
CWE-611
Tags
Published
20 Nov 2019
Updated
6 Mar 2025

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Two packages are affected: phpoffice/phpspreadsheet before 1.8.0 (fixed in 1.8.0) and phpoffice/phpexcel up to and including 1.8.2, for which no fixed version is listed. An attacker who can supply a crafted .xlsx file can bypass the XML entity check and trigger XML external entity (XXE) processing. Upgrade phpoffice/phpspreadsheet to 1.8.0 or later; no fix is listed for phpoffice/phpexcel.

Written 4 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.8 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.013, the 71st percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:27 UTC First seen by agentprime
  2. 31 Oct 2026, 14:27 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.