Incomplete string comparison vulnerability exits in cvxopt.org cvxop <= 1.2.6 in APIs…
Priority LOW 35CWE-697Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
Incomplete string comparison vulnerability exits in cvxopt.org cvxop <= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.
Why it matters now
EPSS 0.01189 68th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed cvxopt (PyPI): 1.2.7
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | cvxopt (PyPI) | before 1.2.7 | 1.2.7 | Patch available | GHSA-8rh6-h94m-vj54 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- cvxopt (PyPI) Vendor— Affected before 1.2.7 Fixed in 1.2.7 Patch available GHSA-8rh6-h94m-vj54
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cvxopt_project:cvxopt:*:*:*:*:*:python:*:* | up to 1.2.6 | Vulnerable | Cvxopt Project |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
- cpe:2.3:a:cvxopt_project:cvxopt:*:*:*:*:*:python:*:* Versions up to 1.2.6 Vulnerable ·Cvxopt Project
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
Remediation
- Fix · GHSA-8rh6-h94m-vj54 cvxopt (PyPI) Fixed in 1.2.7 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-41500
- 2026-10-03 Alias added: GHSA-8rh6-h94m-vj54
References
Advisory 3
Other 4
- https://github.com/cvxopt/cvxopt/commit/d5a21cf1da62e4269176384b1ff62edac5579f94
- https://github.com/cvxopt/cvxopt
- https://github.com/pypa/advisory-database/tree/main/vulns/cvxopt/PYSEC-2021-870.yaml
- https://lists.fedoraproject.org/archives/list/[email protected]/message/CXTPM3DGVYTYQ54OFCMXZVWVOMR7JM2D
Sources
- CVE-2021-41500 · CVE Program
- CVE-2021-41500 · NVD
- FIRST EPSS
- GHSA-8rh6-h94m-vj54 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-41500 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences