PraisonAI is a multi-agent teams system. From praisonaiagents 0.6.0 until 1.6.59 and PraisonAI 3.10.0 until 4.6.59, ToolsMCPServer.run_sse() in src/praisonai-agents/praisonaiagents/mcp/mcp_server.py mounts SseServerTransport on the legacy /sse and /messages/ endpoints without default Host, Origin, or authentication enforcement. A malicious website can use DNS rebinding against a reachable local or internal SSE server, supply attacker-controlled Host and Origin headers, enumerate registered tools, and invoke them with the server user's privileges. The Streamable HTTP transport rejects the same hostile Origin, which isolates the flaw to the legacy SSE wrapper. An initial remediation was released in praisonaiagents 1.6.59 and PraisonAI 4.6.59.
CVE-2026-57112
“—” beside the score: it is equal to the CVSS score beside it.
This high-severity CVE scores 8.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (12th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-78424 (ENISA EUVD) · GHSA-vmf9-xx9w-86wx (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 8.3
- EG Score
- 8.3HIGHmedium confidence
- EG Risk
- 53EG Risk 53/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity83% × 45%Impact severity (EG Severity): CVSS 8.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.2%
- EPSS %ILE
- 12th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (8.3): severity, escalated by confirmed exploitation. This CVE's 8.3 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.3 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
June 18, 2026
Last Modified
September 16, 2026
Advisory Details (3)
Auto-updated Sep 15, 2026PraisonAI v4.6.59
Patch available: MervinPraison/PraisonAI v4.6.59
https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59commit 2adfe7e8323f (MervinPraison/PraisonAI)
Patch available: MervinPraison/PraisonAI v4.6.144 (contains commit 2adfe7e8323f)
https://github.com/MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9ToolsMCPServer Legacy SSE Transport Accepts Attacker Host/Origin and Exposes Registered Tools · Advisory · MervinPraison/PraisonAI · GitHub
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-vmf9-xx9w-86wxVendor Advisories for CVE-2026-57112(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(2 across 1 ecosystem)
PyPI(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| praisonai | 3.10.0 ... 4.6.9 (243 versions) |
| — |
| praisonaiagents | 0.10.0 ... 1.6.9 (347 versions) |
| — |
Weakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 38× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-25 14:17 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-23 01:33 UTCEG score recompute
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-18 03:29 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-16 15:20 UTCEG score recompute
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-12 15:54 UTCEG score recompute
- 2026-10-11 19:37 UTCEG score recompute
- 2026-10-11 16:53 UTCEG score recompute
- 2026-10-11 14:15 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
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- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-10-06 11:44 UTCOSV refresh
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 11th percentile
- 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-09-16 18:27 UTCEG score recompute
- 2026-09-16 18:02 UTCEG score recompute
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-15 11:30 UTCEG score recompute
- 2026-07-30 22:33 UTCEG score recompute
- 2026-07-26 18:46 UTCEG score recompute
- 2026-07-23 03:20 UTCEG score recompute
- 2026-07-20 21:35 UTCEG score recompute
Related CVEs(same product + same CWE)
Same product
10 shownPyPI:praisonaiagents
Same CWE
10 shownCWE-306 · CWE-862 · CWE-346
Frequently asked(5)
What is CVE-2026-57112?
When was the CVE record for CVE-2026-57112 published?
Is CVE-2026-57112 actively exploited?
What is the CVSS score of CVE-2026-57112?
How do I remediate CVE-2026-57112?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-57112
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