Internal resource disclosure via external image fetching
Published Aug 25, 2025 · Updated Aug 25, 2025
SSRF in PHPOffice PhpSpreadsheet allows remote attackers to read internal resources through crafted HTML image URLs. The HTML reader passes an image src value to Drawing::setPath, which fetches external URLs by default without restricting the destination. Reachability requires a consuming application to process attacker-controlled HTML and render the result; the reported consequence is confidentiality loss.
Summary
What happened
SSRF in PHPOffice PhpSpreadsheet allows remote attackers to read internal resources through crafted HTML image URLs. The HTML reader passes an image src value to Drawing::setPath, which fetches external URLs by default without restricting the destination. Reachability requires a consuming application to process attacker-controlled HTML and render the result; the reported consequence is confidentiality loss.
The record
- CVE
- CVE-2025-54370
- Published
- Aug 25, 2025
- Updated
- Aug 25, 2025
- Vendor
- PHPOffice
- Product
- PhpSpreadsheet
- Classifications
- CWE-918
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 25, 2025CVE publishedPublication date reported by the CVE source.
- Aug 25, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 1.30.0
- Affected versionversion=>= 2.0.0, < 2.1.12
- Affected versionversion=>= 2.2.0, < 2.4.0
- Affected versionversion=>= 3.0.0, < 3.10.0
- Affected versionversion=>= 4.0.0, < 5.0.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Upstream HTML image SSRF demonstrationproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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