CVE-2021-27116 json
Privilege escalation in beego
published 2022-04-05 4 y ago modified 2026-06-17 4 mo ago also GHSA-ffjp-66mx-3qpj , EUVD-2022-1723
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
An issue was discovered in file profile.go in function MemProf in beego through 2.0.2, allows attackers to launch symlink attacks locally.
Patch / fix
- go github.com/beego/beego/v2 2.0.2
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/beego/beego/issues/4484 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
| GitHub | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/beego/beego/v2 | >=2.0.0, <2.0.2 |
2.0.2 |
| go | github.com/beego/beego | all versions |
no fix listed |
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
github.com
/beego/beego/issues/4484
web, exploit, issue-tracking, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-27116
advisory
-
github.com
/beego/beego
package
Sources
- CVE List CVE-2021-27116
- GitHub Advisory GHSA-ffjp-66mx-3qpj
- NVD CVE-2021-27116
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