CVE-2021-27116
Privilege escalation in beego
An issue was discovered in file profile.go in function MemProf in beego through 2.0.2, allows attackers to launch symlink attacks locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
An issue was discovered in file profile.go in function MemProf in beego through 2.0.2, allows attackers to launch symlink attacks locally.
- Record
CVE-2021-27116- CVSS 3.1
- 7.8 High
CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N - Updated
- 2026-11-02
EUVDEUVD-2022-1723
An issue was discovered in file profile.go in function MemProf in beego through 2.0.2, allows attackers to launch symlink attacks locally.
- Record
EUVD-2022-1723- CVSS 3.1
- 7.8 High
CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-ffjp-66mx-3qpj
Privilege escalation in beego
An issue was discovered in file profile.go. The MemProf and GetCPUProfile functions do not correctly check whether the created file exists. As a result attackers can launch attacks symlink attacks locally. Attackers can use this vulnerability to escalate privileges.
- Record
GHSA-ffjp-66mx-3qpj- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
NVD
An issue was discovered in file profile.go in function MemProf in beego through 2.0.2, allows attackers to launch symlink attacks locally.
- Record
CVE-2021-27116- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.2 High
AV:L/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-59
- Updated
- 2026-11-02
OSV
An issue was discovered in file profile.go in function MemProf in beego through 2.0.2, allows attackers to launch symlink attacks locally.
- Record
CVE-2021-27116- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-ffjp-66mx-3qpj
Privilege escalation in beego
An issue was discovered in file profile.go. The MemProf and GetCPUProfile functions do not correctly check whether the created file exists. As a result attackers can launch attacks symlink attacks locally. Attackers can use this vulnerability to escalate privileges.
- Record
GHSA-ffjp-66mx-3qpj- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/beego/beego/v2Go |
2.0.0 up to 2.0.2 | 2.0.2 |
github.com/beego/beegoGo |
before 2.0.2 | 2.0.2 |
github.com/beego/beegoGo |
All versions | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-27116 is a high vulnerability (CVSS 7.8) in Beego, published April 5, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.44%, the 38th percentile. Fixed in github.com/beego/beego/v2 2.0.2.