CVE-2026-55526

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (27th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, spider_tools._host_is_blocked() does not resolve ordinary hostnames before scrape_page fetches them. A hostname such as 127.0.0.1.nip.io passes validation and resolves to loopback, permitting internal HTTP access. The fix uses socket.getaddrinfo and fails closed on DNS errors. This issue is fixed in version 1.6.58.

CVSS v3
8.5
EG Score
8.5HIGHmedium confidence
EG Risk
38
EG Risk 38/100CISA SSVC

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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 25, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Aug 25, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
githubMentions a patch (unverified)🟡 PoC Available

SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`) · Advisory · MervinPraison/PraisonAI · GitHub

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x44h-65qv-cw74
github_release Patch Available

PraisonAI v4.6.58

Patch available: MervinPraison/PraisonAI v4.6.58

https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.58
github_commit Patch Available

commit 2f9677abb2ea (MervinPraison/PraisonAI)

Patch available: MervinPraison/PraisonAI v4.6.137 (contains commit 2f9677abb2ea)

https://github.com/MervinPraison/PraisonAI/commit/2f9677abb2ea68eab864ee8b6a828fd0141612e1

Vendor Advisories for CVE-2026-55526(1)

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

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
praisonaiagents0.0.1 ... 1.6.9 (585 versions)
  • every version up to 1.6.58: fixed in 1.6.58
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 54× 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. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-09 04:24 UTCEG score recompute
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-08 03:18 UTCEG score recompute
  5. 2026-10-07 23:48 UTCEPSS rescore
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  9. 2026-10-05 17:43 UTCEPSS rescore
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  11. 2026-10-04 23:22 UTCEPSS rescore
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  15. 2026-10-02 17:56 UTCEPSS rescore
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  20. 2026-09-30 06:49 UTCEG score recompute
  21. 2026-09-29 15:22 UTCEPSS rescore
  22. 2026-09-29 08:33 UTCEG score recompute
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  24. 2026-09-28 13:51 UTCEPSS rescore
  25. 2026-09-27 20:35 UTCEG score recompute
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  1. 2026-09-27 13:48 UTCEPSS rescore
  2. 2026-09-26 22:06 UTCEG score recompute
  3. 2026-09-26 15:59 UTCEPSS rescore
  4. 2026-09-24 19:11 UTCEG score recompute
  5. 2026-09-24 14:04 UTCEPSS rescore
  6. 2026-09-23 21:05 UTCEG score recompute
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-22 22:59 UTCEG score recompute
  9. 2026-09-22 00:52 UTCEG score recompute
  10. 2026-09-21 02:35 UTCEG score recompute
  11. 2026-09-20 20:16 UTCEPSS rescore
  12. 2026-09-19 17:22 UTCEG score recompute
  13. 2026-09-19 06:18 UTCEG score recompute
  14. 2026-09-18 19:28 UTCEPSS rescore
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  18. 2026-09-16 14:08 UTCEPSS rescore
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  20. 2026-09-16 05:15 UTCEPSS rescore
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  22. 2026-09-15 03:11 UTCEPSS rescore
  23. 2026-09-14 00:49 UTCEG score recompute
  24. 2026-09-13 16:47 UTCEPSS rescore
  25. 2026-09-12 15:40 UTCEG score recompute
  26. 2026-09-11 17:32 UTCEG score recompute
  27. 2026-09-11 14:53 UTCEPSS rescore
  28. 2026-09-10 19:24 UTCEG score recompute
  29. 2026-09-10 09:35 UTCEPSS rescore
  30. 2026-09-09 01:15 UTCEG score recompute
  31. 2026-09-08 22:01 UTCEPSS rescore
  32. 2026-09-07 22:40 UTCEG score recompute
  33. 2026-09-07 16:01 UTCEPSS rescore
  34. 2026-09-07 00:29 UTCEG score recompute
  35. 2026-09-06 13:47 UTCEPSS rescore
  36. 2026-09-06 02:23 UTCEG score recompute
  37. 2026-09-04 17:09 UTCEG score recompute
  38. 2026-09-04 06:05 UTCEG score recompute
  39. 2026-09-04 05:06 UTCEPSS rescore
  40. 2026-09-02 20:44 UTCEG score recompute
  41. 2026-09-02 14:12 UTCEPSS rescore
  42. 2026-09-01 20:01 UTCEG score recompute
  43. 2026-09-01 13:54 UTCEPSS rescore
  44. 2026-09-01 08:57 UTCEG score recompute
  45. 2026-09-01 04:40 UTCEPSS rescore
  46. 2026-08-30 23:43 UTCEG score recompute
  47. 2026-08-30 19:17 UTCEPSS rescore
  48. 2026-08-30 01:36 UTCEG score recompute
  49. 2026-08-30 01:22 UTCEPSS rescore
  50. 2026-08-29 03:30 UTCEG score recompute
  51. 2026-08-28 21:41 UTCEPSS rescore
  52. 2026-08-27 18:11 UTCEG score recompute
  53. 2026-08-27 14:25 UTCEPSS rescore
  54. 2026-08-26 18:34 UTCEG score recompute
  55. 2026-08-26 14:46 UTCEPSS rescore
  56. 2026-08-25 20:24 UTCEG score recompute
  57. 2026-08-25 19:36 UTCEG score recompute
  58. 2026-08-25 15:21 UTCEG score recompute
  59. 2026-08-25 14:44 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-55526?
CVE-2026-55526 is a high vulnerability published on August 25, 2026. PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, spidertools.hostisblocked() does not resolve ordinary hostnames before scrape_page fetches them. A hostname such as 127.0.0.1.nip.io passes validation and resolves to loopback, permitting internal HTTP access. The fix uses…
When was CVE-2026-55526 disclosed?
CVE-2026-55526 was first published on August 25, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55526 actively exploited?
CVE-2026-55526 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55526?
CVE-2026-55526 has a CVSS base score of 8.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55526?
A fix for CVE-2026-55526 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-55526 are linked in the Vendor Advisories panel on this page.

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