CVE-2026-59933
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
—
Description
PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | phpoffice/phpspreadsheet | <=1.30.5|>=2.0.0,<=2.1.17|>=2.2.0,<=2.4.6|>=3.3.0,<=3.10.6|>=4.0.0,<=5.8.0 | |
| Packagist | phpoffice/phpspreadsheet | >=4.0.0,<5.8.1 | 5.8.1 |
| Packagist | phpoffice/phpspreadsheet | >=3.3.0,<3.10.7 | 3.10.7 |
| Packagist | phpoffice/phpspreadsheet | >=2.2.0,<2.4.7 | 2.4.7 |
| Packagist | phpoffice/phpspreadsheet | >=2.0.0,<2.1.18 | 2.1.18 |
| Packagist | phpoffice/phpspreadsheet | <1.30.6 | 1.30.6 |
References
- https://github.com/advisories/GHSA-xh5m-36r6-47m3
- https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-xh5m-36r6-47m3
- https://github.com/PHPOffice/PhpSpreadsheet/commit/85f2556b0bf5269061bf45932ecda8a128d81750
- https://github.com/PHPOffice/PhpSpreadsheet
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.6
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.18
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.7
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.7
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.8.1
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.