CVE-2025-71358
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedpicklescan before 0.0.29 fails to detect malicious pickle files that exploit idlelib.autocomplete.AutoComplete.get_entity function in reduce methods. Attackers can embed undetected code in pickle files that executes arbitrary commands when loaded by victims using pickle.load().
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidencepicklescan before 0.0.29 fails to detect malicious pickle files that exploit the idlelib.autocomplete.AutoComplete.get_entity function in reduce methods. Attackers can craft pickle files using this specific technique to bypass the scanner's signature-based detection and achieve arbitrary code execution when victims unpickle the files with pickle.load().
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed picklescan versionRun 'pip show picklescan' or 'pip list | grep picklescan' to see the currently installed version numberAffected if The displayed version is earlier than 0.0.29 (for example, 0.0.28, 0.0.27, etc.)
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Determine if picklescan scans untrusted pickle filesReview your codebase or workflow to see if picklescan is used to validate pickle files from external or untrusted sourcesAffected if Picklescan is actively used to inspect pickle files that originate from users, downloads, network inputs, or other untrusted sources
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Verify pickle.load usage with untrusted dataSearch your codebase for 'pickle.load' calls and check if any handle data from users, APIs, files received from external parties, or network sourcesAffected if Your application unpickles data that could be crafted by an attacker (untrusted input) and relies on picklescan as a security checkpoint
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Check for idlelib-based pickle patterns in your data flowInspect any pickled files you process to see if they contain references to 'idlelib.autocomplete' or 'AutoComplete.get_entity' in reduce methods - use 'pickletools' or hexdump to examine pickle bytecodeAffected if The pickle files being scanned contain the specific idlelib.autocomplete.AutoComplete.get_entity exploitation technique
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Confirm signature-based detection relianceReview your security process to verify that picklescan's detection is a primary or sole control for blocking malicious pickle filesAffected if Your defense against malicious pickles relies primarily or entirely on picklescan's signature-based scanning without additional safeguards
You are affected if picklescan version is below 0.0.29 AND you use it to scan pickle files from untrusted sources, since the scanner can be bypassed by the idlelib.autocomplete.AutoComplete.get_entity reduce method technique.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedUpgrade picklescan to version 0.0.29 or later to receive the updated detection signatures. Additionally, avoid unpickling untrusted data entirely - use safer serialization formats like JSON or implement restricted custom unpicklers.
picklescan 0.0.29
- Check the current installed version of picklescan by running: pip show picklescan or picklescan --version
- Upgrade picklescan to version 0.0.29 or later using: pip install --upgrade picklescan
- Verify the upgrade was successful by checking the version again
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-71358 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-71358 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data