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CVE Record

CVE-2026-68900: Wekan: Stored XSS in HTML board exports through a card-title second parse

Wekan is open source kanban built with Meteor. From 8.72 until 10.23, addBoardHTMLToZip() in client/lib/exportHTML.js read a card title and body through textContent, which decoded entity-encoded markup, and then interpolated titleText and allText into content.innerHTML in the exported index.html. A board member could store an entity-encoded event-handler payload in a card title that remained inert on the live board but was reparsed and executed when a recipient clicked the card in the downloaded HTML export, allowing the script to read and transmit all board data contained in that export, including content added after the attacker's membership was removed. Version 10.23 builds the modal with DOM nodes and assigns untrusted values through textContent. This issue is fixed in version 10.23.

HighCVSS 7.6Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A board member can plant hidden script-like content in a card title. It stays harmless in Wekan but may run when someone opens an exported HTML board and clicks that card. The script could expose all data packaged in the export, including content added after the attacker lost membership.

Executive priority

Prioritize prompt upgrading where sensitive boards are exported to HTML or external members can create cards. The vulnerability needs user interaction, but a successful attack can disclose the complete exported board and persist beyond the attacker’s membership. Treat existing exports from affected versions as potentially unsafe.

Technical view

Wekan 8.72 through 10.22 decodes entity-encoded card content through textContent, then inserts the resulting title and body into innerHTML. This second parse creates stored cross-site scripting in exported index.html. Exploitation requires board access and recipient interaction. Version 10.23 uses DOM nodes and textContent for untrusted values.

Likely exposure

Exposure is limited to Wekan versions 8.72 through 10.22 where boards are exported as HTML. Risk is highest when untrusted or former members could create cards and recipients retain, share, or open those exports. Live boards are not identified as the execution point.

Exploitation context

The supplied sources do not report active exploitation, and this CVE is not listed as KEV in the bundle. A board member must first store crafted content, then a recipient must download the HTML export and click the affected card. Successful execution could disclose exported board data.

Researcher notes

This is a stored XSS caused by an entity-decoding and HTML-reparsing boundary in the export path. The scope change and high confidentiality impact support CVSS 3.1 score 7.6. Evidence identifies the exported card modal as the sink; it does not establish execution on the live board or exploitation in the wild.

Mitigation direction

  • Upgrade Wekan to version 10.23 or later.
  • Avoid opening or sharing HTML board exports produced by affected versions until reviewed.
  • Restrict board membership and HTML export access while upgrades are pending.
  • Follow Wekan advisory guidance for any additional remediation updates.

Validation and detection

  • Inventory Wekan instances and confirm whether versions 8.72 through 10.22 are deployed.
  • Verify upgraded instances report version 10.23 or later.
  • Identify HTML board exports generated by affected versions and assess their distribution.
  • Confirm the export implementation assigns untrusted card values through textContent, not innerHTML.
  • Review board membership history for untrusted users who could create card content.
Prepared
Confidence
high
Sources
4

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

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cve · low confidence lookup

CVE-2026-68900 mapping review

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Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.6 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
4Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.6CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N2.34.7GitHub_M

Vulnerability scoring details

Base CVSS 3.1 score

7.6High
CVSS 3.1 vector shape for CVE-2026-68900Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
wekanwekan>= 8.72, < 10.23Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.