Answer in brief
CVE-2026-55088 records a Medium severity (CVSS 6.8) vulnerability in Etherpad: Device-to-device author-token transfer endpoint is replayable, never expires, and exposes the cleartext author token. The current sources do not mark it as known exploited. The current feed maps ether/etherpad (generic), ep_etherpad-lite (npm), ep_etherpad-lite (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ether/etherpad (generic), ep_etherpad-lite (npm), ep_etherpad-lite (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ether/etherpadgeneric | >= 2.6.0, < 3.1.0 | Not reported |
| ep_etherpad-litenpm | >=2.6.0 <3.1.0 | 3.1.0 |
| ep_etherpad-litenpm | >=2.6.0,<=3.0.0 | 3.1.0 |
Published upstream
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 13, 2026
Etherpad is a real-time collaborative editor. From 2.6.0 until 3.1.0, Etherpad's src/node/hooks/express/tokenTransfer.ts uses POST /tokenTransfer to store an author token for transfer between browsers and exposes it through GET /tokenTransfer/{uuid}. Although the record includes createdAt, the transfer has no expiration check, is not removed after successful redemption, and is returned by res.send(tokenData), including the raw author token. An unauthenticated attacker who obtains a transfer UUID can repeatedly redeem it, receive fresh author cookies, read the cleartext token, and impersonate the originating author for pad read and write operations. This issue is fixed in version 3.1.0.
Quoted source text, attributed separately from HOL analysis.