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CVE Record

CVE-2017-7569: In vBulletin before 5.3.0, remote attackers can bypass the CVE-2016-6483 patch and conduct SSRF attacks by...

In vBulletin before 5.3.0, remote attackers can bypass the CVE-2016-6483 patch and conduct SSRF attacks by leveraging the behavior of the PHP parse_url function, aka VBV-17037.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2017-7569 affects vBulletin before 5.3.0. A remote attacker could bypass an earlier patch and make the forum server perform server-side requests. The sources do not provide a CVSS score, confirmed exploit activity, or detailed vendor mitigation beyond the 5.3.0 release reference.

Executive priority

Treat this as a targeted cleanup item for any legacy vBulletin estate. It deserves prompt attention if the forum is public-facing or can reach sensitive internal systems, but the provided evidence does not support emergency exploitation claims.

Technical view

The issue is an SSRF bypass of the CVE-2016-6483 fix, attributed to PHP parse_url behavior and tracked by vBulletin as VBV-17037. The public record identifies vBulletin versions before 5.3.0 as affected but does not provide exploit details, vulnerable endpoints, or compensating controls.

Likely exposure

Exposure is most likely for internet-facing vBulletin installations running versions earlier than 5.3.0. The source bundle does not identify specific configurations, plugins, or hosting environments that change risk.

Exploitation context

No active exploitation is stated in the provided sources, and the CVE is not marked as KEV. The record describes remote attacker capability, but it does not provide public exploit confirmation or operational attack details.

Researcher notes

The key uncertainty is detail depth: the record names SSRF, parse_url behavior, and the affected pre-5.3.0 range, but does not include CVSS, CWE, vulnerable route details, exploit status, or specific mitigations beyond updating to vendor guidance.

Mitigation direction

  • Inventory all vBulletin instances and confirm exact installed versions.
  • Upgrade vBulletin installations older than 5.3.0 following vendor guidance.
  • Review vendor release notes for VBV-17037 and related CVE-2016-6483 guidance.
  • Restrict outbound server egress where business operations allow.
  • Monitor web server and application logs for unusual server-side outbound request patterns.

Validation and detection

  • Confirm no production vBulletin instance is below version 5.3.0.
  • Check whether historical CVE-2016-6483 remediation was applied and later superseded.
  • Verify outbound network controls limit access to internal-only services.
  • Review asset inventory for forgotten forums, staging sites, and legacy community portals.
  • Document upgrade status and any remaining vendor-support constraints.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2017-7569 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.