CVE-2021-34370

MEDIUM NUCLEI

Accela Civic Platform <= 20.1 - Cross-Site Scripting via ssoAdapter/logoutAction.do successURL Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-34370. PoCs published by Abdulazeez Alaseeri. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit demonstrates a Cross-Site Scripting (XSS) vulnerability in Accela Civic Platform <= 21.1 via the 'successURL' parameter in the logoutAction.do endpoint. The payload %27^alert`1`^%27 is reflected in the response, executing arbitrary JavaScript.

Description

Accela Civic Platform through 20.1 allows ssoAdapter/logoutAction.do successURL XSS. NOTE: the vendor states "there are configurable security flags and we are unable to reproduce them with the available information.

Exploits (1)

exploitdb WORKING POC
by Abdulazeez Alaseeri · textwebappsmultiple
https://www.exploit-db.com/exploits/49990

This exploit demonstrates a Cross-Site Scripting (XSS) vulnerability in Accela Civic Platform <= 21.1 via the 'successURL' parameter in the logoutAction.do endpoint. The payload %27^alert`1`^%27 is reflected in the response, executing arbitrary JavaScript.

Classification
Working Poc 95%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Accela Civic Platform <= 21.1
No auth needed
Prerequisites: Access to the target application's logout endpoint
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Accela Civic Platform <=21.1 - Cross-Site Scripting
MEDIUMby 0x_Akoko

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://gist.github.com/0xx7/7e9f1b725f7ff98b9239d3cb027b7dc8

Scores

CVSS v3 6.1
EPSS 0.1000
EPSS Percentile 95.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
accela/civic_platform < 20.1
Published Jun 09, 2021
Tracked Since Feb 18, 2026