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CVE-2021-28378

Cross-site Scripting in Gitea

3.7 LowPublic exploitFix available

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

8.76%Up 8.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 3.7

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Record
CVE-2021-28378
CVSS 3.1
3.7 LowCVSS:3.1/AC:H/AV:N/A:N/C:L/I:L/PR:L/S:U/UI:R
Updated
2026-11-02
EUVDEUVD-2021-2059 3.7

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Record
EUVD-2021-2059
CVSS 3.1
3.7 LowCVSS:3.1/AC:H/AV:N/A:N/C:L/I:L/PR:L/S:U/UI:R
Updated
2026-11-03
GitHub AdvisoriesGHSA-g95p-88p4-76cm 5.4

Cross-site Scripting in Gitea

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Record
GHSA-g95p-88p4-76cm
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 3.7

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Record
CVE-2021-28378
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0
3.5 LowAV:N/AC:M/Au:S/C:N/I:P/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVALPINE-CVE-2021-28378 5.4

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Record
ALPINE-CVE-2021-28378
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-03
OSV 5.4

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Record
CVE-2021-28378
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVGHSA-g95p-88p4-76cm 5.4

Cross-site Scripting in Gitea

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Record
GHSA-g95p-88p4-76cm
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVBIT-gitea-2021-28378 No score

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Record
BIT-gitea-2021-28378
Updated
2026-11-02
OSVGO-2022-0832 No score

Cross-site Scripting in Gitea in code.gitea.io/gitea

Cross-site Scripting in Gitea in code.gitea.io/gitea

Record
GO-2022-0832
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
code.gitea.io/gitea
Go
 before 1.13.4
1.13.4
gitea
Alpine:v3.14
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.15
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.16
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.17
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.18
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.19
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.20
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.21
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.22
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.23
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Alpine:v3.24
 1.12.0 up to 1.13.4-r0
1.13.4-r0
gitea
Bitnami
 1.12.0 up to 1.12.7, 1.13.0 up to 1.13.4
1.12.71.13.4

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubpandatix/CVE-2021-283782021-08-01

History

History
RecordedChangedSources
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-28378 is a low vulnerability (CVSS 3.7) in Gitea, published March 15, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 8.76%, the 95th percentile. Fixed in code.gitea.io/gitea 1.13.4.

References

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