In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not…
Priority LOW 36CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 8 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-295.
Summary
In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with TLS, allowing an attacker to MITM connections.
Why it matters now
EPSS 0.01809 78th percentileScored 2026-11-07
Fix Partial Twisted (PyPI): 19.7.0rc1Red Hat: 8 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 19.7.0rc1 | 19.7.0rc1 | Patch available | GHSA-65rm-h285-5cc5 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- Twisted (PyPI) Vendor— Affected before 19.7.0rc1 Fixed in 19.7.0rc1 Patch available GHSA-65rm-h285-5cc5
Remediation
- Fix · GHSA-65rm-h285-5cc5 Twisted (PyPI) Fixed in 19.7.0rc1 Advisory →
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: Out of support scope |
| Red Hat Enterprise Linux 7 | 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: Out of support scope |
| Red Hat OpenStack Platform 9 (Mitaka) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 9 (Mitaka) Operational Tools | Affected | No fix planned: Will not fix |
Not affected: 3 products
- Red Hat Ceph Storage 2
- Red Hat Ceph Storage 3
- Red Hat Storage 3
Timeline
- 2026-10-02 Threatist record created from CVE-2019-12855
- 2026-10-03 Alias added: GHSA-65rm-h285-5cc5
References
Advisory 7
Other 7
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://github.com/pypa/advisory-database/tree/main/vulns/twisted/PYSEC-2019-129.yaml
- https://github.com/twisted/twisted
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLTZDMFBNFSJMBXYJNGJHENJA4H2TSMZ
- https://lists.fedoraproject.org/archives/list/[email protected]/message/PLTZDMFBNFSJMBXYJNGJHENJA4H2TSMZ
- https://usn.ubuntu.com/4308-1
- https://usn.ubuntu.com/4308-2
More Twisted vulnerabilities
- TI-2026-30612 Twisted: Denial of Service (DoS) in twisted.names via Crafted DNS Compression Pointer Chains CVSS 3.1HIGH 7.5
- TI-2022-06090 Buffer Overflow in Twisted CVSS 3.1HIGH 7.5
- TI-2024-27854 HTML injection in HTTP redirect body CVSS 3.1MEDIUM 6.1
- TI-2022-18723 Twisted vulnerable to NameVirtualHost Host header injection CVSS 3.1MEDIUM 5.4
- TI-2020-08165 In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. CVSS 3.1CRITICAL 9.8
- TI-2020-08166 In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2019-12855 · CVE Program
- CVE-2019-12855 · NVD
- FIRST EPSS
- GHSA-65rm-h285-5cc5 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-12855 · 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