Code execution via Delta class pollution
Published Sep 5, 2025 · Updated Sep 8, 2025
Class pollution in Zepworks DeepDiff 5.0.0 through 8.6.0 allows remote attackers to execute code through crafted Delta input. The Delta constructor accepts tuple-form internal paths without applying the string-path filter, enabling traversal through globals to make SAFE_TO_IMPORT permit posix.system before a second pickle payload is deserialized. Exploitation requires an application to pass attacker-controlled Delta data and can execute code or crash that application's process.
Summary
What happened
Class pollution in Zepworks DeepDiff 5.0.0 through 8.6.0 allows remote attackers to execute code through crafted Delta input. The Delta constructor accepts tuple-form internal paths without applying the string-path filter, enabling traversal through globals to make SAFE_TO_IMPORT permit posix.system before a second pickle payload is deserialized. Exploitation requires an application to pass attacker-controlled Delta data and can execute code or crash that application's process.
The record
- CVE
- CVE-2025-58367
- Published
- Sep 5, 2025
- Updated
- Sep 8, 2025
- Vendor
- Zepworks
- Product
- DeepDiff
- Classifications
- CWE-915, T1059.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 5, 2025CVE publishedPublication date reported by the CVE source.
- Sep 8, 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=>= 5.0.0, < 8.6.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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 Delta class-pollution and pickle RCE regression exploitproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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