CVE-2016-4807

MEDIUMNVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory published 2022-05-17. NVD baseline CVSS 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 2%CVSS: 4.8Exploit: NoneExposed: 0

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

Web2py versions 2.14.5 and below was affected by Reflected XSS vulnerability, which allows an attacker to perform an XSS attack on logged in user (admin).

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: 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
Severity48% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
81.3%
KEV
Not listed

Published

January 11, 2017

Last Modified

May 6, 2026

References (4)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
pipweb2py—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
web2py1.96.4, 1.98.2, 2.1.1——

Data Freshness Timeline

(refreshed 13× in last 7d / 45× 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.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-07-23 01:23 UTCEG score recompute
  2. 2026-07-22 22:02 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
  4. 2026-07-21 15:21 UTCEPSS rescore
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  20. 2026-07-12 05:43 UTCEPSS rescore
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  22. 2026-07-12 05:11 UTCOSV refresh
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  24. 2026-07-09 19:05 UTCEPSS rescore
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  1. 2026-07-07 13:42 UTCEPSS rescore
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  20. 2026-06-23 11:28 UTCOSV refresh
  21. 2026-06-21 14:54 UTCEPSS rescore
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  27. 2026-06-18 17:50 UTCEPSS rescore
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  41. 2026-06-08 14:14 UTCEPSS rescore
  42. 2026-06-07 15:22 UTCEPSS rescore
  43. 2026-06-07 15:22 UTCEPSS rescore
  44. 2026-06-06 13:45 UTCEPSS rescore
  45. 2026-06-06 13:10 UTCOSV refresh
  46. 2026-06-05 22:44 UTCEPSS rescore
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  49. 2026-06-04 13:10 UTCEPSS rescore
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  51. 2026-06-02 20:10 UTCEPSS rescore
  52. 2026-06-01 13:49 UTCEPSS rescore
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  54. 2026-05-31 22:28 UTCEPSS rescore
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  57. 2026-05-29 13:41 UTCEPSS rescore
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  65. 2026-05-22 21:15 UTCEPSS rescore
  66. 2026-05-22 21:15 UTCEPSS rescore
  67. 2026-05-22 17:18 UTCEG score recompute
  68. 2026-05-22 17:18 UTCGHSA enrichment
  69. 2026-05-21 22:40 UTCEPSS rescore
  70. 2026-05-20 22:37 UTCEPSS rescore
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-39821✓ verified
    First seen May 16, 2016

    Web2py 2.14.5 - Multiple Vulnerabilities

    Open source ↗

Frequently asked(5)

What is CVE-2016-4807?
CVE-2016-4807 is a medium vulnerability published on January 11, 2017. Web2py versions 2.14.5 and below was affected by Reflected XSS vulnerability, which allows an attacker to perform an XSS attack on logged in user (admin).
When was CVE-2016-4807 disclosed?
CVE-2016-4807 was first published in the National Vulnerability Database on January 11, 2017, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-4807 actively exploited?
CVE-2016-4807 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-4807?
CVE-2016-4807 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2016-4807?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-4807, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-4807

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