What is CVE-2021-34369?

CVE-2021-34369 is a medium-severity vulnerability in Accela Civic Platform. CVSS score: 6.5/10. Published 2021-06-09.

How severe is CVE-2021-34369?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-34369 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Accela Civic Platform

CVE-2021-34369

portlets/contact/ref/refContactDetail.do in Accela Civic Platform through 20.1 allows remote attackers to obtain sensitive information via a modified contactSeqNumber value. NOTE: the vendor states "the information that is being queried is authorized for an authenticated user of that application, so we consider this not applicable.

Published 2021-06-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.082 (94.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.082 · newest: 0.082 · change: 0.000

Affected products

Accela Civic Platform

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

gist.github.com/0xx7/58943bb6e9ef77a09d3c7eb00dcafdc7 (Third Party Advisory)
packetstormsecurity.com/files/163116/Accela-Civic-Platform-21.1-Insecure-Direct… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-34369?: CVE-2021-34369 is a medium-severity vulnerability in Accela Civic Platform. CVSS score: 6.5/10. Published 2021-06-09.
How severe is CVE-2021-34369?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-34369 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.