Security readout for executives and security teams
This is an old authentication bypass in Zenas PaoBacheca Guestbook 2.1. If PHP register_globals is enabled, a remote attacker can manipulate a login state parameter and gain administrative access without valid credentials. Business urgency is highest for any legacy internet-facing deployment still running that product or configuration. Likely limited to legacy PHP sites running PaoBacheca Guestbook 2.1 with register_globals enabled. The source bundle lists no modern CPEs, vendor advisory, or environment inventory indicators, so exposure must be confirmed from asset records and deployed files. Prioritize if legacy public web properties still run this guestbook. The business risk is unauthorized site administration, but the scope is probably narrow and depends on a deprecated PHP setting. If no matching deployment exists, no further action is needed beyond documentation. Mitigation focus: Identify and remove any exposed PaoBacheca Guestbook 2.1 deployments.; Disable PHP register_globals wherever legacy PHP remains in service.; Restrict administrative interfaces from public internet access..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CVE-2009-3421 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- paobachecaguestbook-login-sec-bypass(52100)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
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