AB Download Manager before 1.11.2 contains a cross-site request forgery vulnerability in its unauthenticated
Source GCVE Database
Not known to be exploited · CVSS 8.7 High : upgrade to 1.11.2 soon.
Data as of 3 Nov 2026, 19:45 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 8.7 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 8.8 |
| CNA | CVSS 4.0 | 8.7 |
- Patch
- Available – fixed in 1.11.2
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Upgrade ab-download-manager to 1.11.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| amir1376ab-download-manager | Affected
| Fixed in
|
AI-suggested
A fixed version 1.11.2 of AB Download Manager is available that addresses this vulnerability. Users should upgrade to version 1.11.2 or later to mitigate this issue. No other mitigation or temporary workaround is indicated.
Description
AB Download Manager versions before 1.11.2 have a cross-site request forgery (CSRF) vulnerability in an unauthenticated browser-integration API. This flaw allows remote attackers to write arbitrary files to specified paths by sending crafted requests to the /start-headless-download endpoint. Exploitation can lead to placing malicious payloads in startup folders, enabling code execution upon the next user login.
References
- nvd.nist.gov/vuln/detail/CVE-2026-121451 (opens in a new tab)
- github.com/amir1376/ab-download-manager/issues/1489 (opens in a new tab)
- github.com/amir1376/ab-download-manager/commit/34cd27af6a9a6c2046af112bc9bd34828fec0bbc (opens in a new tab)
- github.com/amir1376/ab-download-manager (opens in a new tab)
- github.com/amir1376/ab-download-manager/blob/v1.11.1/desktop/app/src/main/kotlin/com/abdownloadmanager/desktop/integration/IntegrationHandlerImp.kt (opens in a new tab)
- github.com/amir1376/ab-download-manager/blob/v1.11.1/integration/server/src/main/kotlin/com/abdownloadmanager/integration/Endpoints.kt (opens in a new tab)
- vulncheck.com/advisories/ab-download-manager-before-1.11.2-arbitrary-file-write-via-start-headless-download-csrf (opens in a new tab)