CVE-2026-6857
A flaw was found in camel-infinispan. This vulnerability involves unsafe deserialization in the ProtoStream remote aggregation repository. A
CVSS
7.5
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EPSS
0.7%
p48
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Exploit Today
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Publicado: 22 abr 2026 · Última mod.: 15 jul 2026 · CWE-502
0.7%EPSS · 30 días0.7%
2026-06-302026-07-17
A flaw was found in camel-infinispan. This vulnerability involves unsafe deserialization in the ProtoStream remote aggregation repository. A remote attacker with low privileges could exploit this by sending specially crafted data, leading to arbitrary code execution. This allows the attacker to gain full control over the affected system, impacting its confidentiality, integrity, and availability.
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:17668
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:22453
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-6857
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2460003
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:17668
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:22453
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-6857
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2460003
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6857.json
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——29An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code Execution (RCE) via the `picklefile` parameter in the `yacc()` function. This parameter accepts a `.pkl` file that is deserialized with `pickle.load()` without validation. Because `pickle` allows execution of embedded code via `__reduce__()`, an attacker can achieve code execution by passing a malicious pickle file. The parameter is not mentioned in official documentation or the GitHub repository, yet it is active in the PyPI version. This introduces a stealthy backdoor and persistence risk. NOTE: A third-party states that this vulnerability should be rejected because the proof of concept does not demonstrate arbitrary code execution and fails to complete successfully.3d