CVE-2026-56772

NewsBlur before 14.5.0 contains a broken access control vulnerability that allows authenticated users to read private notification feeds by supplying arbitrary user_id values to the GET /social/interactions endpoint without ownership verification. Attackers can enumerate user_id values to access another user's follows, replies, and social activity without authorization.

CVSS 4.0

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-25)

CWE

CWE-639

Published

2026-06-25

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

References

• https://github.com/samuelclay/NewsBlur/commit/613c60b67cc46b3f4cae1dc2dfd8d717a39bc483
• https://github.com/samuelclay/NewsBlur/releases/tag/Android_14.5.0
• https://www.vulncheck.com/advisories/newsblur-insecure-direct-object-reference-in-social-interactions-endpoint

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