CLEANSTART-2026-IF90105: buffer overflow vulnerability in the Brotli decoder (c/dec/decode

Q: Which deployments should be prioritized for investigation?

Prioritize deployments of cleanstart/gitea, cleanstart/apache-nifi, cleanstart/keycloak, and cleanstart/keda, as these are the affected software entries listed for this issue.

Q: Does exploitation require credentials or user interaction?

No. The provided vector indicates network-based exploitation with low attack complexity, no privileges required, and no user interaction required.

Q: What impact could successful exploitation have?

The supplied severity vector rates confidentiality, integrity, and availability impact as high, indicating that successful exploitation could affect all three security objectives.

Published Nov 11, 2026

Updated

CVE-2026-111497 affects multiple packages. A buffer overflow vulnerability in the Brotli decoder (c/dec/decode. See references for individual vulnerability details.

Affected Software

4 affected componentsFixes available

cleanstart/gitea<1.27.3-r4

1.27.3-r4

cleanstart/apache-nifi<2.11.0-r3

2.11.0-r3

cleanstart/keycloak<26.6.4-r8

26.6.4-r8

cleanstart/keda<2.20.2-r5

2.20.2-r5

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade cleanstart/gitea to a version that resolves this vulnerability.
Fixed in 1.27.3-r4
Upgrade
Upgrade cleanstart/apache-nifi to a version that resolves this vulnerability.
Fixed in 2.11.0-r3
Upgrade
Upgrade cleanstart/keycloak to a version that resolves this vulnerability.
Fixed in 26.6.4-r8
Upgrade
Upgrade cleanstart/keda to a version that resolves this vulnerability.
Fixed in 2.20.2-r5

Event History

Nov 11, 2026

Advisory Published

via OSV·12:38 AM

Data Sourced

via OSV·12:38 AM

DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

CVE-2026-111497

Frequently Asked Questions

Which deployments should be prioritized for investigation?

Prioritize deployments of cleanstart/gitea, cleanstart/apache-nifi, cleanstart/keycloak, and cleanstart/keda, as these are the affected software entries listed for this issue.

Does exploitation require credentials or user interaction?

No. The provided vector indicates network-based exploitation with low attack complexity, no privileges required, and no user interaction required.

What impact could successful exploitation have?

The supplied severity vector rates confidentiality, integrity, and availability impact as high, indicating that successful exploitation could affect all three security objectives.

CLEANSTART-2026-IF90105: buffer overflow vulnerability in the Brotli decoder (c/dec/decode

Affected Software

Remediation

Event History

Child vulnerabilities

Frequently Asked Questions

Which deployments should be prioritized for investigation?

Does exploitation require credentials or user interaction?

What impact could successful exploitation have?

Company

Resources

Contact

Frequently Asked Questions

Which deployments should be prioritized for investigation?

Does exploitation require credentials or user interaction?

What impact could successful exploitation have?