CVE-2026-71513
CVE-2026-71513: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh8.8
High [CVE-2026-71513] Remote Code Execution via AllowlistUnpickler dotted-name bypass
CVE-2026-71513Source published Source updated
NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft untrusted transition-parser models that execute arbitrary commands when TransitionParser.parse loads the model through allowlisted_pickle_load. A flaw was found in NLTK. A remote attacker can achieve remote code execution by crafting untrusted transition-parser models. This allows attackers to bypass the allowlist by resolving dotted names through attribute traversal, leading to the execution of arbitrary commands when `TransitionParser.parse` loads a malicious model. This can lead to arbitrary…
- Affected products in this advisory
- Lightspeed Core
- OpenShift Lightspeed
- Source-reported affected versions
- < 3.10.3
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- To mitigate this issue, avoid loading NLTK transition-parser models from untrusted or unverified sources. Ensure that applications processing such models implement robust input validation and only load models from known, secure origins.
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