Vulnerability · Published Nov 1, 2026 · Assigned by VulnCheck

CVE-2026-120250OpenAlgo 1.0.0.29 before 2.0.3.1 Improper Certificate Validation in SMTP Connections

Medium 5.3

In plain English

A medium-severity improper certificate validation in OpenAlgo from marketcalls. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.1%top 98.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
marketcalls	OpenAlgo	1.0.0.29 – before 2.0.3.1

Weakness: CWE-295 · Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/marketcalls/openalgo/commit/af5d5f2cc564ee31cdd1159bc147a9b03cc713ac patch
OpenAlgo 2.0.3.1 Release Notes release-notes
https://github.com/marketcalls/openalgo/blob/96e5927e5adbff146f203bf72c7a79add9e6622c/utils/email_utils.py#L403-L406 technical-description
https://github.com/marketcalls/openalgo product
VulnCheck Advisory: OpenAlgo 1.0.0.29 before 2.0.3.1 Improper Certificate Validation in SMTP Connections third-party-advisory