Secuno
ENNL
Book demo

CVE-2025-68131

Agronholm Cbor2 vulnerability

7.5 HIGHPublic exploitEPSS 0.46%
  1. Published31 Dec 2025

Description

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 and can be accessed by subsequent CBOR messages using the sharedref tag (29). This allows an attacker-controlled message to read data from previously decoded messages if the decoder is reused across trust boundaries. Version 5.8.0 patches the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Agronholm Cbor2≥ 3.0.0 < 5.8.0

Remediation

Fixed in
Agronholm Cbor2≥ 5.8.0

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-850948.8
The Canva Android App before 2.376.0 did not restrict the headers returned to an…
CVE-2026-428809.6
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions…
CVE-2024-433848.0
A low privileged remote attacker can gain the root password due to improper removal of…
CVE-2026-328919.0
Anchorr is a Discord bot for requesting movies and TV shows and receiving notifications…
CVE-2022-28189.8
Improper Removal of Sensitive Information Before Storage or Transfer in GitHub…
CVE-2022-16508.1
Improper Removal of Sensitive Information Before Storage or Transfer in GitHub…

Frequently asked

Is CVE-2025-68131 being actively exploited?

CVE-2025-68131 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.46%.

How severe is CVE-2025-68131?

CVE-2025-68131 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.46% probability of exploitation.

Which products are affected by CVE-2025-68131?

Affected products include Agronholm Cbor2.

How do I fix CVE-2025-68131?

Upgrade affected software to a fixed version, for example Agronholm Cbor2 5.8.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-68131 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.