CVE-2006-1896

MEDIUMCVSS v2 · 6.06.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 6.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:M/Au:S/C:P/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 1.3% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
6.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS v2: 6.0Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Unspecified vulnerability in phpBB allows remote authenticated users with Administration Panel access to execute arbitrary PHP code via crafted Font Colour 3 ($theme[fontcolor3] variable) and/or signature values, possibly involving the highlight functionality. NOTE: the original report does not clarify whether this issue is static code injection, eval injection, or another type of vulnerability.

CVSS v2.0 (legacy)
6.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
6.0(low)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity60% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
67%
KEV
Not listed

Published

April 20, 2006

Last Modified

April 16, 2026

References (16)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 13:28 UTCEG score recompute▲ 6.00
  2. 2026-07-24 14:11 UTCEPSS rescore
  3. 2026-07-23 00:50 UTCEG score recompute
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  7. 2026-07-20 17:02 UTCEPSS rescore
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  1. 2026-06-25 13:46 UTCEPSS rescore
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  36. 2026-05-31 22:28 UTCEPSS rescore
  37. 2026-05-31 09:04 UTCEG score recompute
  38. 2026-05-31 09:04 UTCGHSA enrichment
  39. 2026-05-31 00:13 UTCEPSS rescore
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  42. 2026-05-29 13:40 UTCEPSS rescore
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  45. 2026-05-27 13:37 UTCEPSS rescore
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  49. 2026-05-26 07:16 UTCEPSS rescore
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  58. 2026-05-20 11:20 UTCEPSS rescore
  59. 2026-05-18 21:29 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2006-1896?
CVE-2006-1896 is a medium vulnerability published on April 20, 2006. Unspecified vulnerability in phpBB allows remote authenticated users with Administration Panel access to execute arbitrary PHP code via crafted Font Colour 3 ($theme[fontcolor3] variable) and/or signature values, possibly involving the highlight functionality. NOTE: the original report does not…
When was CVE-2006-1896 disclosed?
CVE-2006-1896 was first published in the National Vulnerability Database on April 20, 2006, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2006-1896 actively exploited?
CVE-2006-1896 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 33.0% of all scored CVEs.
How do I remediate CVE-2006-1896?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-1896, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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