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Vulnerability record · CVE-2026-49948 · published 9 June 2026

CVE-2026-49948: Missing authorization vulnerability

Mem0 versions through 0.2.8, fixed in commit ae7f406, contain a missing authorization vulnerability in the self-hosted server component where the POST /configure endpoint modifies global LLM provider and embedder configuration but only verifies authentication via JWT or X-API-Key without validating the caller's role. Any authenticated user holding a distributed API key can redirect all LLM and embedder traffic to an attacker-controlled server, with the malicious configuration persisted to PostgreSQL and surviving server restarts to affect all users and API keys on the instance.

8.6 CVSS 4.0 High EPSS 0.53% · top 57.8% CWE-862 · Missing authorization Deferred
8.6CVSS 4.0 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
23 Jul 2026Last modified by NVD

Description

Mem0 versions through 0.2.8, fixed in commit ae7f406, contain a missing authorization vulnerability in the self-hosted server component where the POST /configure endpoint modifies global LLM provider and embedder configuration but only verifies authentication via JWT or X-API-Key without validating the caller's role. Any authenticated user holding a distributed API key can redirect all LLM and embedder traffic to an attacker-controlled server, with the malicious configuration persisted to PostgreSQL and surviving server restarts to affect all users and API keys on the instance.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/mem0ai/mem0/commit/ae7f4062652df1376990221101d1adbb0819c973
https://github.com/mem0ai/mem0/issues/5127
https://github.com/mem0ai/mem0/issues/5384
https://github.com/mem0ai/mem0/pull/5360
https://www.vulncheck.com/advisories/mem0-missing-authorization-via-post-configure-endpoint

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Source: NIST National Vulnerability Database (record CVE-2026-49948), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.