Jenkins
Jenkins
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the system log viewer does not escape log record metadata (source, level, and timestamp) result...
2026-09-03
Description
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the system log viewer does not escape log record metadata (source, level, and timestamp) resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers in control of agent processes.
AI Analyst Comment
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
---METADATA---
VENDOR: AresIT
PRODUCT: WP Compress
AFFECTED_VERSIONS: n/a through 7.21.28
CONFIDENCE: high
MISSING: none
PROFILE: daily@7c4e524780a4
MODEL: gemini-3.1-flash-lite
GENERATED: 2026-09-04T09:13:32.892Z
CREDITS: Thaer.Assfour | Patchstack Bug Bounty Program (finder)
SOURCES_JSON: [{"url":"https://patchstack.com/database/wordpress/plugin/wp-compress-image-optimizer/vulnerability/wordpress-wp-compress-plugin-7-21-28-settings-change-vulnerability?_s_id=cve","name":null,"tags":["vdb-entry"]}]
---END_METADATA---
Description Summary:
A missing authorization vulnerability in the WP Compress plugin allows unauthenticated attackers to modify plugin settings.
Executive Summary:
The WP Compress plugin for WordPress is vulnerable to an unauthenticated settings change, which could allow an attacker to alter plugin configurations and disrupt service.
Vulnerability Details
CVE-ID: CVE-2026-84757
Affected Software: AresIT WP Compress
Affected Versions: n/a through 7.21.28
Vulnerability: This vulnerability is caused by a missing authorization check (CWE-862) within the plugin, which allows an unauthenticated attacker to change sensitive plugin settings via the web interface.
Business Impact
Successful exploitation of this flaw allows an unauthenticated attacker to modify plugin configuration without prior access, which may lead to service disruption or the unauthorized modification of image optimization behaviors. With a CVSS score of 8.2, this vulnerability represents a high risk that could be leveraged to impact site integrity and availability.
Remediation Plan
Immediate Action: Update the WP Compress plugin to version 7.22.0 or later to ensure the authorization check is properly enforced.
Proactive Monitoring: Review web access logs for unauthorized POST requests directed at plugin settings endpoints and monitor for unexpected changes in plugin configuration.
Compensating Controls: Deploy a Web Application Firewall (WAF) with rules configured to block suspicious requests to the plugin's administrative settings path until the update is applied.
Exploitation Status
Public Exploit Available: No.
Analyst Notes: As of September 4, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently dangerous due to its lack of authentication requirements, making it trivial for remote attackers to execute if the target site is publicly accessible.
Analyst Recommendation
Given the high severity of this vulnerability and the lack of required authentication, it is imperative that administrators update the WP Compress plugin immediately. Failure to apply the provided patch leaves the application exposed to unauthorized configuration changes that could negatively impact the site's operational integrity.