CVE-2023-2822Public exploitNetwork attack vector

Reflected XSS via unescaped logout URL

Published May 20, 2023 · Updated Feb 12, 2025

Reflected XSS in Ellucian Ethos Identity 5.10.0 through 5.10.5 allows remote attackers to execute script through a logout URL. The /cas/logout handler inserts the url parameter into an href attribute without safely encoding quotes and angle brackets, permitting injected SVG image elements and onerror handlers. A victim must follow a crafted logout link in a CAS deployment; injected script runs in the Ethos Identity origin and can alter page content or access browser data available to that origin.

CVSS severity4.3
Medium
EPSS probability3.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in Ellucian Ethos Identity 5.10.0 through 5.10.5 allows remote attackers to execute script through a logout URL. The /cas/logout handler inserts the url parameter into an href attribute without safely encoding quotes and angle brackets, permitting injected SVG image elements and onerror handlers. A victim must follow a crafted logout link in a CAS deployment; injected script runs in the Ethos Identity origin and can alter page content or access browser data available to that origin.

The record

CVE
CVE-2023-2822
Published
May 20, 2023
Updated
Feb 12, 2025
Vendor
Ellucian
Product
Ellucian Ethos Identity
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.10.0
  2. Affected versionversion=5.10.1
  3. Affected versionversion=5.10.2
  4. Affected versionversion=5.10.3
  5. Affected versionversion=5.10.4
  6. Affected versionversion=5.10.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ellucian · Ellucian Ethos Identityversion=5.10.0; version=5.10.1; version=5.10.2; version=5.10.3; version=5.10.4; version=5.10.5

Published CVSS scores

4.7Cyberninja717CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
5.0VulDBAV:N/AC:L/Au:N/C:N/I:P/A:N
4.3VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo