---
title: "CVE-2023-45144: XWiki Identity Oauth Privilege escalation (PR)/remote code execution from login screen through unescaped URL parameter"
url: https://erroneo.us/security/cve/CVE-2023-45144/
description: "CVE-2023-45144 (com.xwiki.identity-oauth:identity-oauth-ui (Maven)): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-10-16
date_modified: 2024-09-16
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-45144"
kev: false
cvss: 10
epss: 0.01235
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-45144: XWiki Identity Oauth Privilege escalation (PR)/remote code execution from login screen through unescaped URL parameter

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 1.2% , percentile 69: FIRST’s model estimates a 1.2% chance of exploitation activity in the next 30 days, higher than 69% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes com.xwiki.identity-oauth:identity-oauth-ui (Maven) >= 1.0, < 1.6, fixed in 1.6 . Check your lockfile, including transitive dependencies.

## What it is

com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on OAuth authorizations. When a user logs in via the OAuth method, the identityOAuth parameters sent in the GET request is vulnerable to cross site scripting (XSS) and XWiki syntax injection. This allows remote code execution via the groovy macro and thus affects the confidentiality, integrity and availability of the whole XWiki installation. The issue has been fixed in Identity OAuth version 1.6. There are no known workarounds for this vulnerability and users are advised to upgrade.

## Affected packages

- Maven `com.xwiki.identity-oauth:identity-oauth-ui` >= 1.0, < 1.6 → fixed: 1.6

## Affected products (CVE record)

- xwikisas identity-oauth: >= 1.0, < 1.6

## Severity

- GitHub_M CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 10.0 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 1.23% probability of exploitation activity in the next 30 days; percentile 69.

## Sources

- [GitHub Advisory GHSA-h2rm-29ch-wfmh](https://github.com/advisories/GHSA-h2rm-29ch-wfmh)
- [CVE.org record CVE-2023-45144](https://www.cve.org/CVERecord?id=CVE-2023-45144)
- [NVD entry CVE-2023-45144](https://nvd.nist.gov/vuln/detail/CVE-2023-45144)
- [github.com](https://github.com/xwikisas/identity-oauth/security/advisories/GHSA-h2rm-29ch-wfmh)
- [github.com](https://github.com/xwikisas/identity-oauth/commit/d805d3154b17c6bf455ddf5deb0a3461a3833bc6)
- [github.com](https://github.com/xwikisas/identity-oauth/commit/d805d3154b17c6bf455ddf5deb0a3461a3833bc6#diff-2ab2e0716443d790d7d798320e4a45151661f4eca5440331f4a227b29c87c188)
- [github.com](https://github.com/xwikisas/identity-oauth/blob/master/ui/src/main/resources/IdentityOAuth/LoginUIExtension.vm#L58)
- [jira.xwiki.org](https://jira.xwiki.org/browse/XWIKI-20719)

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Source page: https://erroneo.us/security/cve/CVE-2023-45144/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt