CVE-2026-8857— Full RCE using EasyTimeline Extension
Public Exploits 1
Nuclei · 1 CVE-2026-8857.yaml [template]
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Wikimedia Foundation | timeline | *< 1.46.0, 1.45.4, 1.44.6, 1.43.9 | affected |
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I. Basic Information for CVE-2026-8857
Vulnerability Information
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Vulnerability Title
Full RCE using EasyTimeline Extension
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in Wikimedia Foundation timeline. This vulnerability is associated with program files scripts/EasyTimeline.Pl, includes/Timeline.Php. This issue affects timeline: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Wikimedia timeline 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wikimedia timeline是美国Wikimedia基金会的一款扩展组件。 Wikimedia timeline存在代码注入漏洞，该漏洞源于程序文件scripts/EasyTimeline.Pl和includes/Timeline.Php存在代码注入问题，可能导致攻击者执行恶意代码。以下版本受到影响：1.46.0之前版本、1.45.4之前版本、1.44.6之前版本和1.43.9之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Wikimedia Foundation | timeline | * ~ 1.46.0, 1.45.4, 1.44.6, 1.43.9 | - |
II. Public POCs for CVE-2026-8857
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | MediaWiki EasyTimeline (Timeline) extension versions before 1.46.0, 1.45.4, 1.44.6, and 1.43.9 contain a code injection vulnerability caused by insufficient neutralization of newlines in TextData text attributes in EasyTimeline.pl / Timeline.php. A crafted <timeline> block can inject ploticus '#proc getdata' and 'command:' directives, which execute via /bin/sh because EasyTimeline invokes ploticus without the -noshell flag. Exploitation requires the ability to submit timeline markup for rendering — low-privileged edit access, or anonymous access on wikis that allow anonymous editing and API use. This template's parse-based check needs API read access; optional username/password inputs can be supplied for private wikis that deny anonymous read. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-8857.yaml | POC Details |
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Patches & Fixes for CVE-2026-8857 (1)
Same Patch Batch · Wikimedia Foundation · 2026-07-01 · 18 CVEs total
| CVE-2026-58038 | Stored XSS through javascript URLs in SVGs generated by EasyTimeline | |
| CVE-2026-13706 | UrlShortener extension url validation can be bypassed due to difference between php url pa | |
| CVE-2026-13707 | Session fixation attacks on improperly configured OAuth 1.0a tools | |
| CVE-2026-58034 | Stored XSS through a system message when blocking a temporary account that's related to ot | |
| CVE-2026-58028 | Pretty-printed API output combined with centralauthtoken allows XSS with certain gadgets | |
| CVE-2026-58029 | Full Account Takeover from BotPasswords and OAuth via action=changeauthenticationdata | |
| CVE-2026-58036 | Users API leaks whether privileged users have their user groups disabled for lack of 2FA | |
| CVE-2026-58030 | SyntaxHighlight stored XSS via unsanitized 'linelinks' attribute | |
| CVE-2026-58033 | "Total number of distinct authors" statistic at action=info does not exclude revisions whe | |
| CVE-2026-58037 | Core log entries for exceptions and XSS issues in log entry formatting code that may be ca | |
| CVE-2026-58027 | QueryAbuseFilter API can be used to see the hit count of private filters, which is hidden | |
| CVE-2026-58031 | Stored i18n XSS in Special:ApiSandbox when a deprecated module is selected | |
| CVE-2026-58032 | mw.Api.getErrorMessage() may return injected HTML if used without errorformat=html | |
| CVE-2026-58024 | API identification of users on private wikis | |
| CVE-2026-58025 | Remote Code Execution via Unsafe Deserialization in LogItem Import | |
| CVE-2026-58026 | $wgNonincludableNamespaces can be bypassed by embedding redirect in other namespaces | |
| CVE-2026-58035 | Stored XSS through a system message in the codex version of Special:Block |
IV. Related Vulnerabilities
Same vendor: Wikimedia Foundation
- CVE-2026-58025
Remote Code Execution via Unsafe Deserialization in LogItem - CVE-2026-58029
Full Account Takeover from BotPasswords and OAuth via action - CVE-2026-58028
Pretty-printed API output combined with centralauthtoken all - CVE-2026-58026
$wgNonincludableNamespaces can be bypassed by embedding redi - CVE-2026-58038
Stored XSS through javascript URLs in SVGs generated by Easy
Same weakness: CWE-94
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GL.iNet XE3000 Language Update ui.update_langs code injectio - CVE-2026-19964
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iatsiuk pptr-mcp execute Tool vm-executor.ts executeCode cod - CVE-2026-17581
WCPOS <= 1.9.14 - Authenticated (Shop Manager+) Code Injecti - CVE-2026-18385
Paid Membership Plugin, Ecommerce, User Registration Form, L
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