CVE-2026-27116Public exploitNetwork attack vector

Interface spoofing via TipTap HTML parsing

Published Feb 25, 2026 · Updated Feb 25, 2026

Reflected HTML injection in Vikunja before 2.0.0 allows remote attackers to spoof trusted interface content via a crafted filter URL. FilterInput.vue passes the filter parameter as a plain string to TipTap setContent(), whose DOMParser interprets it as HTML rather than text. A victim must open the link and click Filter; permitted SVG and anchor elements can display phishing controls and redirect the victim externally.

CVSS severity6.1
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected HTML injection in Vikunja before 2.0.0 allows remote attackers to spoof trusted interface content via a crafted filter URL. FilterInput.vue passes the filter parameter as a plain string to TipTap setContent(), whose DOMParser interprets it as HTML rather than text. A victim must open the link and click Filter; permitted SVG and anchor elements can display phishing controls and redirect the victim externally.

The record

CVE
CVE-2026-27116
Published
Feb 25, 2026
Updated
Feb 25, 2026
Vendor
Vikunja
Product
Vikunja
Classifications
CWE-79, CWE-80, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vikunja · Vikunjaversion=< 2.0.0

Published CVSS scores

6.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
T1204.001Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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