- 5.3MediumCVSS base score
- 0.22%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
A security vulnerability has been detected in Toggl OÜ Toggl Track Extension up to 4.11.21. This affects an unknown function of the component postMessage Handler. The manipulation leads to origin validation error. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 4.11.22 mitigates this issue. Upgrading the affected component is advised. The vendor confirms, that "[i]t was fixed in 4.11.21 on Chrome and 4.11.22 on Firefox."
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits1
Timeline
ID reserved
By VulDB
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Medium5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P |
| VulDBCNA (assigner) | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C |
| VulDBCNA (assigner) | 3.0 | Medium5.4 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C |
| VulDBCNA (assigner) | 2.0 | Medium6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P/E:POC/RL:OF/RC:C |
| NVDNVD · Deferred | 4.0 | Low2.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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 |
- EPSS (exploitation in 30 days)
- 0.22% · top 88% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
Toggl OÜ · Toggl Track Extension
- affected 4.11.0
- affected 4.11.1
- affected 4.11.2
- affected 4.11.3
- affected 4.11.4
- affected 4.11.5
- affected 4.11.6
- affected 4.11.7
- affected 4.11.8
- affected 4.11.9
- affected 4.11.10
- affected 4.11.11
- affected 4.11.12
- affected 4.11.13
- affected 4.11.14
- affected 4.11.15
- affected 4.11.16
- affected 4.11.17
- affected 4.11.18
- affected 4.11.19
- affected 4.11.20
- affected 4.11.21
- unaffected 4.11.22
References
References5
- VDB-397230 | Toggl OÜ Toggl Track Extension postMessage origin validation (opens in a new tab)vdb-entry
- VDB-397230 | CTI Indicators (IOB, IOC) (opens in a new tab)signaturepermissions-required
- CVE-2026-82811 | CVE Analysis and Report (opens in a new tab)third-party-advisory
- Submit #875273 | Toggl OÜ Toggl Track 4.11.16 Origin Validation Error (opens in a new tab)third-party-advisory
- https://github.com/xryj920/chrome_extensions/blob/main/Toggl%20O%C3%9C%20Toggl%20Track%204.11.16%20accepts%20forged%20session-state%20messages%20through%20an%20unauthenticated%20postMessage%20handler (opens in a new tab)exploit
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-68679 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-82811)Record last updated .