In Twisted before 19.2.1, twisted.web did not validate or sanitize URIs or HTTP methods…
Priority LOW 32CWE-74Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 6 fixed, 6 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.
Summary
In Twisted before 19.2.1, twisted.web did not validate or sanitize URIs or HTTP methods, allowing an attacker to inject invalid characters such as CRLF.
Why it matters now
EPSS 0.02523 84th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Partial twisted (PyPI): 19.2.1Red Hat: 2 advisoriesRed Hat: 6 fixed, 6 without a fix
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 |
| — | twisted (PyPI) | before 19.2.1 | 19.2.1 | Patch available | GHSA-6cc5-2vg4-cc7m |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- twisted (PyPI) Vendor— Affected before 19.2.1 Fixed in 19.2.1 Patch available GHSA-6cc5-2vg4-cc7m
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:twisted:twisted:*:*:*:*:*:*:*:* | before 19.2.1 | Vulnerable | twisted |
| cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* | 29 | Vulnerable | Fedoraproject |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* | 19.10 | Vulnerable | Canonical |
| cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:* | 8.8 | Vulnerable | Oracle |
| cpe:2.3:o:oracle:solaris:11:*:*:*:*:*:*:* | 11 | Vulnerable | Oracle |
- cpe:2.3:a:twisted:twisted:*:*:*:*:*:*:*:* Versions before 19.2.1 Vulnerable ·twisted
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* Versions 29 Vulnerable ·Fedoraproject
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical
- cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:* Versions 8.8 Vulnerable ·Oracle
- cpe:2.3:o:oracle:solaris:11:*:*:*:*:*:*:* Versions 11 Vulnerable ·Oracle
Remediation
- Fix · GHSA-6cc5-2vg4-cc7m twisted (PyPI) Fixed in 19.2.1 Advisory →
Red Hat 2 advisories
- RHSA-2020:1091 Released 2020-03-31 · Red Hat rating Moderatepython-twisted-web security update
- Red Hat Enterprise Linux Client Optional (v. 7) python-twisted-web-12.1.0-6.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-twisted-web-12.1.0-6.el7
- Red Hat Enterprise Linux Server Optional (v. 7) python-twisted-web-12.1.0-6.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) python-twisted-web-12.1.0-6.el7
- RHSA-2019:3172 Released 2019-10-22 · Red Hat rating ModerateRed Hat Satellite 6 security, bug fix, and enhancement update
- Red Hat Satellite 6.6 ansible-runner-1.3.4-2.el7ar, ansiblerole-foreman_scap_client-0.0.3-1.el7sat, ansiblerole-insights-client-1.6-2.el7sat +47
- Red Hat Satellite Capsule 6.6 ansible-runner-1.3.4-2.el7ar, ansiblerole-foreman_scap_client-0.0.3-1.el7sat, ansiblerole-insights-client-1.6-2.el7sat +47
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ceph Storage 2 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 10 (Newton) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 14 (Rocky) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 9 (Mitaka) | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:1091 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:1091 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:1091 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:1091 |
| Red Hat Satellite 6.6 | Fixed | RHSA-2019:3172 |
| Red Hat Satellite Capsule 6.6 | Fixed | RHSA-2019:3172 |
Not affected: 4 products
- Red Hat Ceph Storage 2
- Red Hat Ceph Storage 3
- Red Hat OpenStack Platform 9 (Mitaka) Operational Tools
- Red Hat Storage 3
Timeline
- 2026-10-02 Threatist record created from CVE-2019-12387
- 2026-10-03 Alias added: GHSA-6cc5-2vg4-cc7m
References
Exploit 2
Patch 2
Advisory 7
Other 6
- https://github.com/pypa/advisory-database/tree/main/vulns/twisted/PYSEC-2019-128.yaml
- https://github.com/twisted/twisted
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2G5RPDQ4BNB336HL6WW5ZJ344MAWNN7N
- https://lists.fedoraproject.org/archives/list/[email protected]/message/2G5RPDQ4BNB336HL6WW5ZJ344MAWNN7N
- https://usn.ubuntu.com/4308-1
- https://usn.ubuntu.com/4308-2
Sources
- CVE-2019-12387 · CVE Program
- CVE-2019-12387 · NVD
- FIRST EPSS
- GHSA-6cc5-2vg4-cc7m · GitHub Advisory Database · CC BY 4.0
- CVE-2019-12387 · Red Hat security data · CC BY 4.0
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