CVE-2026-52796Low· 3.5▾ Sunlit

Gogs has DoS in rendering issue index pattern

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score19/ 100 · Minimal

impact 19.3 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Jun 22, 2026

Updated

Jun 22, 2026

CVSS

3.5

Vendor

gogs

Product

gogs.io/gogs

CWE

CWE-1336

Depth score

19 · Minimal

EPSS

0.28% · p21

Platforms

—

Source

GHSA

Vector

—

EPSS history

Exploit-prediction probability, daily snapshots since Jul 4.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

2 events · 12 days

Jun 22, 2026Published
Disclosed via GHSA
Jul 4, 2026EPSS first tracked
0.3%

gogs CWE-1336 #ghsa #go

Affected

gogs.io/gogs <= 0.14.2

Patched in

gogs.io/gogs 0.14.3

Full technical detail▾

Overview

Summary

Special template of issue index pattern may cause panic.

Details

in internal/markup/markup.go

link = fmt.Sprintf(`<a href="%s">%s</a>`, com.Expand(metas["format"], metas), m)

Issue index pattern is rendered to link with com.Expand.

However, com.Expand is not safe.

i = strings.Index(template, "}")
if s, ok := match[template[:i]]; ok {

when { is found but } not found, i comes to 1, template[:-1] will be called, and then panicked

finally, all pages than contains issue index are unavailable.

PoC

set issue index pattern as follow

add a commit which point to an issue in its msg

using #1 above

Impact

DoS that cause part of pages of the specify repo unavailable.

Affected packages

gogs.io/gogs <= 0.14.2

Remediation

Upgrade to a patched release:

gogs.io/gogs 0.14.3

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#ghsa#go

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CVE-2026-52796Low· 3.5▾ Sunlit

Gogs has DoS in rendering issue index pattern

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score19/ 100 · Minimal

impact 19.3 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Jun 22, 2026

Updated

Jun 22, 2026

CVSS

3.5

Vendor

gogs

Product

gogs.io/gogs

CWE

CWE-1336

Depth score

19 · Minimal

EPSS

0.28% · p21

Platforms

—

Source

GHSA

Vector

—

EPSS history

Exploit-prediction probability, daily snapshots since Jul 4.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

2 events · 12 days

Jun 22, 2026Published
Disclosed via GHSA
Jul 4, 2026EPSS first tracked
0.3%

gogs CWE-1336 #ghsa #go

Affected

gogs.io/gogs <= 0.14.2

Patched in

gogs.io/gogs 0.14.3

Full technical detail▾

Overview

Summary

Special template of issue index pattern may cause panic.

Details

in internal/markup/markup.go

link = fmt.Sprintf(`<a href="%s">%s</a>`, com.Expand(metas["format"], metas), m)

Issue index pattern is rendered to link with com.Expand.

However, com.Expand is not safe.

i = strings.Index(template, "}")
if s, ok := match[template[:i]]; ok {

when { is found but } not found, i comes to 1, template[:-1] will be called, and then panicked

finally, all pages than contains issue index are unavailable.

PoC

set issue index pattern as follow

add a commit which point to an issue in its msg

using #1 above

Impact

DoS that cause part of pages of the specify repo unavailable.

Affected packages

gogs.io/gogs <= 0.14.2

Remediation

Upgrade to a patched release:

gogs.io/gogs 0.14.3

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#ghsa#go