Improper certificate validation in OpenAlgo SMTP connections
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-295.
Summary
OpenAlgo from 1.0.0.29 before 2.0.3.1 does not validate TLS certificates for SMTP connections made with STARTTLS or SMTPS in utils/email_utils.py and utils/email_debug.py. A network-positioned attacker can present a forged certificate to intercept SMTP credentials and later mail, including password-reset links. The flaw is tracked as CWE-295.
Written with Claude Haiku 5.5 from the sources below · 2026-11-01
Description from the CNA
OpenAlgo 1.0.0.29 before 2.0.3.1 contains an improper certificate validation vulnerability in utils/email_utils.py and utils/email_debug.py that disables TLS hostname and certificate checks for STARTTLS and SMTPS. Network-positioned attackers can present a forged certificate to intercept SMTP credentials and all later mail, including password-reset links.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| marketcalls | OpenAlgo | 1.0.0.29 to before 2.0.3.1 | 2.0.3.1 | Patch available | CNA |
- OpenAlgo Vendormarketcalls Affected 1.0.0.29 to before 2.0.3.1 Fixed in 2.0.3.1 Patch available CNA
Remediation
Update OpenAlgo to version 2.0.3.1 or later, which fixes the issue.
Written with Claude Haiku 5.5 from the sources below · 2026-11-01
- Fix · CNA OpenAlgo (marketcalls) Fixed in 2.0.3.1
Timeline
- 2026-11-01 Threatist record created from CVE-2026-120250
- 2026-11-01 Alias added: GHSA-pxjx-g7g8-jwq6
- 2026-11-02 Priority changed: MEDIUM → LOW
- 2026-11-05 CISA SSVC decision points changed
References
Sources
- CVE-2026-120250 · CVE Program
- CVE-2026-120250 · NVD
- FIRST EPSS
- GHSA-pxjx-g7g8-jwq6 · GitHub Advisory Database · CC BY 4.0
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