CVE-2026-26209 cbor2 has a Denial of Service via Uncontrolled Recursion in cbor2.loads

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Versions prior to 5.9.0 are vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding deeply nested CBOR structures. This vulnerability affects both the...

CVE-2026-26209 cbor2 has a Denial of Service via Uncontrolled Recursion in cbor2.loads

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Versions prior to 5.9.0 are vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding deeply nested CBOR structures. This vulnerability affects both the...

CVE-2026-26209

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Versions prior to 5.9.0 are vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding deeply nested CBOR structures. This vulnerability affects both the...

cbor2 安全漏洞

cbor2 is a binary object representation serialization format encoding and decoding library developed by Alex Grönholm as an individual developer. Versions of cbor2 prior to 5.9.0 contained security vulnerabilities. These vulnerabilities stemmed from uncontrolled recursion when decoding deeply...

CVE-2026-26209: Uncontrolled Recursion

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Versions prior to 5.9.0 are vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding deeply nested CBOR structures. This vulnerability affects both the...

Security update for python-cbor2 (moderate)

openSUSE Security Update: Security update for python-cbor2 Announcement ID: openSUSE-SU-2026:0009-1 Rating: moderate References: 1255783 Cross-References: CVE-2025-68131 CVSS scores: CVE-2025-68131 SUSE: 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Affected Products: openSU...

OPENSUSE-SU-2026:10014-1 python311-cbor2-5.8.0-2.1 on GA media

These are all security issues fixed in the python311-cbor2-5.8.0-2.1 package on the GA media of openSUSE Tumbleweed...

CVE-2025-68131

A flaw was found in cbor2. When a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag 28 persist in memory. This allows an attacker-controlled message to read sensitive data from previously decoded messages if the decoder is reused across trust...

EUVD-2025-205866

CBORDecoder reuse can leak shareable values across decode calls...

Improper Removal of Sensitive Information Before Storage or Transfer

Overview cbor2 is a CBOR deserializer with extensive tag support Affected versions of this package are vulnerable to Improper Removal of Sensitive Information Before Storage or Transfer in the CBORDecoder instance. An attacker can access data from previously decoded messages with a message that...

PYSEC-2025-90

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag 28 persist in memory an...

DEBIAN-CVE-2025-68131

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag 28 persist in memory an...

PYSEC-2025-90

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag 28 persist in memory an...

UBUNTU-CVE-2025-68131

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag 28 persist in memory an...

CVE-2025-68131

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag 28 persist in memory an...

CVE-2025-68131 CBORDecoder reuse can leak shareable values across decode calls

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag 28 persist in memory an...

CVE-2025-68131

CVE-2025-68131 (cbor2) affects the cbor2 library’s CBORDecoder when reusing a decoder across trust boundaries. Versions 3.0.0–before 5.8.0 may retain shareable-tag (28) values in memory, allowing an attacker-controlled message to read data from earlier decoded messages via the sharedref tag (29)....

CVE-2025-68131 CBORDecoder reuse can leak shareable values across decode calls

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag 28 persist in memory an...

cbor2 安全漏洞

cbor2 is a library with extensive tag support for encoding and decoding binary object representations in serialized format from the individual developer Alex Grönholm. A security vulnerability exists in cbor2 version 3.0.0 up to and including version 5.8.0, which stems from the fact that when the...

Linux Distros Unpatched Vulnerability : CVE-2025-68131

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Starting in version 3.0.0 and prior to version 5.8....