CVE-2026-28677Network attack vector

Internal endpoint access via incomplete URL validation

Published Mar 6, 2026 · Updated Mar 6, 2026

SSRF in OpenSift before 1.6.3-alpha allows remote attackers to reach unintended internal endpoints through the URL ingest interface. The backend/app/ingest.py validator allowed embedded credentials and non-standard ports, while the downloader followed redirects to a different host. Exploitation requires access to URL ingest on a non-localhost deployment and can expose internal information or briefly interrupt the service.

CVSS severity8.2
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in OpenSift before 1.6.3-alpha allows remote attackers to reach unintended internal endpoints through the URL ingest interface. The backend/app/ingest.py validator allowed embedded credentials and non-standard ports, while the downloader followed redirects to a different host. Exploitation requires access to URL ingest on a non-localhost deployment and can expose internal information or briefly interrupt the service.

The record

CVE
CVE-2026-28677
Published
Mar 6, 2026
Updated
Mar 6, 2026
Vendor
OpenSift
Product
OpenSift
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.6.3-alpha

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenSift · OpenSiftversion=< 1.6.3-alpha

Published CVSS scores

8.2GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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