CVE-2026-8857 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

References

Link	Providers
https://phabricator.wikimedia.org/T426631

History

Wed, 01 Jul 2026 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 01 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
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.
Title		Full RCE using EasyTimeline Extension
Weaknesses		CWE-94
References		https://phabricator.wikimedia.org/T426631
Metrics		cvssV4_0 `{'score': 0, 'vector': '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'}`

MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published: 2026-07-01T15:08:49.425Z

Updated: 2026-07-01T15:49:55.764Z

Reserved: 2026-05-18T16:56:22.404Z

Link: CVE-2026-8857

Vulnrichment

Updated: 2026-07-01T15:49:51.151Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8857", "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "state": "PUBLISHED", "assignerShortName": "wikimedia-foundation", "dateReserved": "2026-05-18T16:56:22.404Z", "datePublished": "2026-07-01T15:08:49.425Z", "dateUpdated": "2026-07-01T15:49:55.764Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "shortName": "wikimedia-foundation", "dateUpdated": "2026-07-01T15:08:49.425Z"}, "title": "Full RCE using EasyTimeline Extension", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-94", "description": "CWE-94", "type": "CWE"}]}], "affected": [{"vendor": "Wikimedia Foundation", "product": "timeline", "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/timeline/+/refs/heads/master", "programFiles": ["scripts/EasyTimeline.pl", "includes/Timeline.php"], "versions": [{"status": "affected", "version": "*", "lessThan": "1.46.0, 1.45.4, 1.44.6, 1.43.9", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A vulnerability in Wikimedia Foundation timeline.\n\n This vulnerability is associated with program files scripts/EasyTimeline.Pl, includes/Timeline.Php.\n\n\n\nThis issue affects timeline: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A vulnerability in Wikimedia Foundation timeline.<p> This vulnerability is associated with program files scripts/EasyTimeline.Pl, includes/Timeline.Php.</p><p>This issue affects timeline: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.</p>"}]}], "references": [{"url": "https://phabricator.wikimedia.org/T426631"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "NONE", "baseScore": 0, "vectorString": "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": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-01T15:49:46.432787Z", "id": "CVE-2026-8857", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-01T15:49:55.764Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-8857", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-01T15:49:46.432787Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-01T15:49:51.151Z"}}], "cna": {"title": "Full RCE using EasyTimeline Extension", "source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 0, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/timeline/+/refs/heads/master", "vendor": "Wikimedia Foundation", "product": "timeline", "versions": [{"status": "affected", "version": "*", "lessThan": "1.46.0, 1.45.4, 1.44.6, 1.43.9", "versionType": "semver"}], "programFiles": ["scripts/EasyTimeline.pl", "includes/Timeline.php"], "defaultStatus": "unaffected"}], "references": [{"url": "https://phabricator.wikimedia.org/T426631"}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "A vulnerability in Wikimedia Foundation timeline.\n\n This vulnerability is associated with program files scripts/EasyTimeline.Pl, includes/Timeline.Php.\n\n\n\nThis issue affects timeline: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.", "supportingMedia": [{"type": "text/html", "value": "A vulnerability in Wikimedia Foundation timeline.<p> This vulnerability is associated with program files scripts/EasyTimeline.Pl, includes/Timeline.Php.</p><p>This issue affects timeline: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-94", "description": "CWE-94"}]}], "providerMetadata": {"orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "shortName": "wikimedia-foundation", "dateUpdated": "2026-07-01T15:08:49.425Z"}}}, "cveMetadata": {"cveId": "CVE-2026-8857", "state": "PUBLISHED", "dateUpdated": "2026-07-01T15:49:55.764Z", "dateReserved": "2026-05-18T16:56:22.404Z", "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "datePublished": "2026-07-01T15:08:49.425Z", "assignerShortName": "wikimedia-foundation"}, "dataVersion": "5.2"}