What is CVE-2026-117562?

CVE-2026-117562 is a medium-severity vulnerability in Anyant Rssant, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-10-27.

How severe is CVE-2026-117562?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Anyant Rssant

CVE-2026-117562

rssant 1.9.0 through 1.9.1 contains an authorization bypass vulnerability that allows unauthenticated attackers to read stories from unpublished feeds through the anonymous publish.story_get endpoint. Because UnionStory.get_by_feed_offset ignores the only_publish flag, attackers can enumerate feed IDs and offsets to retrieve private feed stories.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-10-27 · last modified 2026-10-27.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Anyant Rssant

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

github.com/anyant/rssant/issues/155 (issue-tracking)
github.com/anyant/rssant (product)
github.com/anyant/rssant/commit/b65336f1414a32a50670ee2ba7e87cb38e0ad47b (patch)
github.com/anyant/rssant/blob/v1.9.1/rssant_api/models/union_story.py (technical-description)
www.vulncheck.com/advisories/rssant-1.9.0-through-1.9.1-information-disclosure-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-117562?: CVE-2026-117562 is a medium-severity vulnerability in Anyant Rssant, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-10-27.
How severe is CVE-2026-117562?: Medium severity. CVSS v3 base score is 5.3 out of 10.