CVE-2021-29061
A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Vfsjfilechooser2 version 0.2.9 and below which occurs when the application attempts to validate crafted URIs.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Vfsjfilechooser2 version 0.2.9 and below which occurs when the application attempts to validate crafted URIs.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.31% probability · 83th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- vfsjfilechooser2 project/vfsjfilechooser2
- Source
- cve@mitre.org
EPSS 2.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/fracpete/vfsjfilechooser2/commit/9c9f2c317f3de5ece60a3ae28c371e9796e3909bPatch, Third Party Advisory
- https://github.com/fracpete/vfsjfilechooser2/issues/7Exploit, Issue Tracking, Third Party Advisory
- https://github.com/fracpete/vfsjfilechooser2/releases/tag/vfsjfilechooser2-0.2.9Release Notes, Third Party Advisory
- https://github.com/yetingli/PoCs/blob/main/CVE-2021-29061/Vfsjfilechooser2.mdExploit, Patch, Third Party Advisory
- https://github.com/yetingli/SaveResults/blob/main/md/vfsjfilechooser2.mdExploit, Patch, Third Party Advisory
- https://github.com/fracpete/vfsjfilechooser2/commit/9c9f2c317f3de5ece60a3ae28c371e9796e3909bPatch, Third Party Advisory
- https://github.com/fracpete/vfsjfilechooser2/issues/7Exploit, Issue Tracking, Third Party Advisory
- https://github.com/fracpete/vfsjfilechooser2/releases/tag/vfsjfilechooser2-0.2.9Release Notes, Third Party Advisory
- https://github.com/yetingli/PoCs/blob/main/CVE-2021-29061/Vfsjfilechooser2.mdExploit, Patch, Third Party Advisory
- https://github.com/yetingli/SaveResults/blob/main/md/vfsjfilechooser2.mdExploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.