CVE-2026-77992 - Vulnerability Details - OpenCVE

Description

Joomla Extension - fabrikar.com - heredoc terminator breakout in the calc element in Fabrik < 4.7.2 - The onUpdateComment endpoint did not perform any access checks.

Published: 2026-08-22

Score: 9.5 Critical

EPSS: n/a

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

fabrikar.com

Fabrik extension for Joomla

unaffected

Version	Status	Constraints
`1.0.0-4.7.1`	affected	—

No data.

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://www.fabrikar.com/

History

Sat, 22 Aug 2026 14:30:00 +0000

Type	Values Removed	Values Added
Description		Joomla Extension - fabrikar.com - heredoc terminator breakout in the calc element in Fabrik < 4.7.2 - The onUpdateComment endpoint did not perform any access checks.
Title		Joomla Extension - fabrikar.com - heredoc terminator breakout in the calc element in Fabrik < 4.7.2
Weaknesses		CWE-94
References		https://www.fabrikar.com/
Metrics		cvssV4_0 `{'score': 9.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}`

Subscriptions

No data.

MITRE

Status: PUBLISHED

Assigner: Joomla

Published: 2026-08-22T14:20:18.729Z

Updated: 2026-08-22T14:20:18.729Z

Reserved: 2026-08-21T19:05:09.013Z

Link: CVE-2026-77992

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-08-22T15:16:23.293

Modified: 2026-08-22T15:16:23.293

Link: CVE-2026-77992

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-94
Improper Control of Generation of Code ('Code Injection')

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77992", "assignerOrgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586", "state": "PUBLISHED", "assignerShortName": "Joomla", "dateReserved": "2026-08-21T19:05:09.013Z", "datePublished": "2026-08-22T14:20:18.729Z", "dateUpdated": "2026-08-22T14:20:18.729Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Fabrik extension for Joomla", "vendor": "fabrikar.com", "versions": [{"status": "affected", "version": "1.0.0-4.7.1"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Phil Taylor, mysites.guru"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Joomla Extension - fabrikar.com - heredoc terminator breakout in the calc element in Fabrik < 4.7.2 - The onUpdateComment endpoint did not perform any access checks."}], "value": "Joomla Extension - fabrikar.com - heredoc terminator breakout in the calc element in Fabrik < 4.7.2 - The onUpdateComment endpoint did not perform any access checks."}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "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": "CRITICAL", "baseScore": 9.5, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-94", "description": "CWE-94 Improper Control of Generation of Code ('Code Injection')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586", "shortName": "Joomla", "dateUpdated": "2026-08-22T14:20:18.729Z"}, "references": [{"tags": ["product"], "url": "https://www.fabrikar.com/"}], "source": {"discovery": "UNKNOWN"}, "title": "Joomla Extension - fabrikar.com - heredoc terminator breakout in the calc element in Fabrik < 4.7.2", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Fabrik extension for Joomla", "vendor": "fabrikar.com", "versions": [{"status": "affected", "version": "1.0.0-4.7.1"}]}], "source": "security@joomla.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Joomla Extension - fabrikar.com - heredoc terminator breakout in the calc element in Fabrik < 4.7.2 - The onUpdateComment endpoint did not perform any access checks."}], "id": "CVE-2026-77992", "lastModified": "2026-08-22T15:16:23.293", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.5, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@joomla.org", "type": "Secondary"}]}, "published": "2026-08-22T15:16:23.293", "references": [{"source": "security@joomla.org", "url": "https://www.fabrikar.com/"}], "sourceIdentifier": "security@joomla.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}], "source": "security@joomla.org", "type": "Primary"}]}