CVE-2026-84886

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-03. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

A vulnerability was determined in simular-ai Agent-S up to 0.3.2. Affected by this vulnerability is the function ImageData of the file gui_agents/s1/utils/ocr_server.py of the component OCR HTTP API. Executing a manipulation of the argument img_bytes can lead to resource consumption. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 5, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic

cve/AgentS_OCR_HTTP_Body_Image_DoS_Report at main · hackerguopeng/cve · GitHub

https://github.com/hackerguopeng/cve/tree/main/AgentS_OCR_HTTP_Body_Image_DoS_Report

Vendor Advisories for CVE-2026-84886(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 49× 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. 2026-09-19 07:57 UTCEG score recompute
  2. 2026-09-19 07:57 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 05:37 UTCEG score recompute
  5. 2026-09-18 05:37 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 03:16 UTCEG score recompute
  8. 2026-09-17 03:16 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-16 00:55 UTCEG score recompute
  12. 2026-09-16 00:55 UTCGHSA enrichment
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-14 22:34 UTCGHSA enrichment
  16. 2026-09-13 20:13 UTCEG score recompute
  17. 2026-09-13 20:13 UTCGHSA enrichment
  18. 2026-09-12 17:52 UTCEG score recompute
  19. 2026-09-12 17:52 UTCGHSA enrichment
  20. 2026-09-11 15:31 UTCEG score recompute
  21. 2026-09-11 15:31 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-10 13:08 UTCEG score recompute
  25. 2026-09-10 13:08 UTCGHSA enrichment
Show 24 more
  1. 2026-09-09 10:47 UTCEG score recompute
  2. 2026-09-09 10:46 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 08:25 UTCEG score recompute
  5. 2026-09-08 08:25 UTCGHSA enrichment
  6. 2026-09-07 06:01 UTCEG score recompute
  7. 2026-09-07 06:00 UTCGHSA enrichment
  8. 2026-09-06 13:48 UTCEPSS rescore
  9. 2026-09-06 03:39 UTCEG score recompute
  10. 2026-09-06 03:39 UTCGHSA enrichment
  11. 2026-09-05 15:31 UTCEPSS rescore
  12. 2026-09-05 01:21 UTCNVD updateCVSS v4 → 5.5
  13. 2026-09-05 01:18 UTCEG score recompute
  14. 2026-09-05 01:17 UTCGHSA enrichment
  15. 2026-09-05 01:14 UTCMITRE cvelistV5CVSS v4 → 6.9
  16. 2026-09-04 20:07 UTCEG score recompute
  17. 2026-09-04 20:07 UTCGHSA enrichment
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-03 17:39 UTCEG score recompute
  20. 2026-09-03 17:39 UTCGHSA enrichment
  21. 2026-09-03 05:29 UTCEG score recompute
  22. 2026-09-03 05:25 UTCNVD updateCVSS v4 → 5.5
  23. 2026-09-02 20:53 UTCEG score recompute
  24. 2026-09-02 20:50 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-84886?
CVE-2026-84886 is a medium vulnerability published on September 2, 2026. A vulnerability was determined in simular-ai Agent-S up to 0.3.2. Affected by this vulnerability is the function ImageData of the file guiagents/s1/utils/ocrserver.py of the component OCR HTTP API. Executing a manipulation of the argument img_bytes can lead to resource consumption. The attack may…
When was CVE-2026-84886 disclosed?
CVE-2026-84886 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84886 actively exploited?
CVE-2026-84886 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.1% of all scored CVEs.
What is the CVSS score of CVE-2026-84886?
CVE-2026-84886 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-84886?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84886, 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

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