# CVE-2026-121535: miroslavpejic85 MiroTalk P2P Room Action server.js checkPassword excessive authentication

Status: published. Published: 2026-11-03. Updated: 2026-11-04.

A vulnerability was found in miroslavpejic85 MiroTalk P2P up to 2.0.87. This vulnerability affects the function checkPassword of the file app/src/server.js of the component Room Action Handler. The manipulation results in improper restriction of excessive authentication attempts. It is possible to launch the attack remotely. Attacks of this nature are highly complex. It is stated that the exploitability is difficult. The exploit has been made public and could be used. Upgrading to version 2.1.38 is able to resolve this issue. The patch is identified as 55bec1d05f931d2e43633d6d0b7274f79ec719dd. Upgrading the affected component is advised.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulDB) — https://github.com/miroslavpejic85/mirotalk/commit/55bec1d05f931d2e43633d6d0b7274f79ec719dd

## Affected products and versions

- miroslavpejic85 / MiroTalk P2P: 2.0.0 (affected); 2.0.1 (affected); 2.0.2 (affected); 2.0.3 (affected); 2.0.4 (affected); 2.0.5 (affected); 2.0.6 (affected); 2.0.7 (affected); 2.0.8 (affected); 2.0.9 (affected); 2.0.10 (affected); 2.0.11 (affected); 2.0.12 (affected); 2.0.13 (affected); 2.0.14 (affected); 2.0.15 (affected); 2.0.16 (affected); 2.0.17 (affected); 2.0.18 (affected); 2.0.19 (affected); 2.0.20 (affected); 2.0.21 (affected); 2.0.22 (affected); 2.0.23 (affected); 2.0.24 (affected); 2.0.25 (affected); 2.0.26 (affected); 2.0.27 (affected); 2.0.28 (affected); 2.0.29 (affected); 2.0.30 (affected); 2.0.31 (affected); 2.0.32 (affected); 2.0.33 (affected); 2.0.34 (affected); 2.0.35 (affected); 2.0.36 (affected); 2.0.37 (affected); 2.0.38 (affected); 2.0.39 (affected); 2.0.40 (affected); 2.0.41 (affected); 2.0.42 (affected); 2.0.43 (affected); 2.0.44 (affected); 2.0.45 (affected); 2.0.46 (affected); 2.0.47 (affected); 2.0.48 (affected); 2.0.49 (affected); 2.0.50 (affected); 2.0.51 (affected); 2.0.52 (affected); 2.0.53 (affected); 2.0.54 (affected); 2.0.55 (affected); 2.0.56 (affected); 2.0.57 (affected); 2.0.58 (affected); 2.0.59 (affected); 2.0.60 (affected); 2.0.61 (affected); 2.0.62 (affected); 2.0.63 (affected); 2.0.64 (affected); 2.0.65 (affected); 2.0.66 (affected); 2.0.67 (affected); 2.0.68 (affected); 2.0.69 (affected); 2.0.70 (affected); 2.0.71 (affected); 2.0.72 (affected); 2.0.73 (affected); 2.0.74 (affected); 2.0.75 (affected); 2.0.76 (affected); 2.0.77 (affected); 2.0.78 (affected); 2.0.79 (affected); 2.0.80 (affected); 2.0.81 (affected); 2.0.82 (affected); 2.0.83 (affected); 2.0.84 (affected); 2.0.85 (affected); 2.0.86 (affected); 2.0.87 (affected); 2.1.38 (unaffected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 6.3 (medium); CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P; source: CNA: VulDB

- CVSS 3.1: 3.7 (low); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C; source: CNA: VulDB

- CVSS 3.0: 3.7 (low); CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C; source: CNA: VulDB

- CVSS 2.0: 2.6 (low); AV:N/AC:H/Au:N/C:P/I:N/A:N/E:POC/RL:OF/RC:C; source: CNA: VulDB

- CVSS 4.0: 2.9 (low); CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: cna@vuldb.com

- CVSS 3.1: 3.7 (low); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N; source: NVD: cna@vuldb.com

- CVSS 2.0: 2.6 (low); AV:N/AC:H/Au:N/C:P/I:N/A:N; source: NVD: cna@vuldb.com

- CISA KEV: No listing in collected sources

- EPSS: 0.52% as of 2026-11-04; percentile 44.40%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-307, CWE-799

## Exploit evidence

- exploit: https://github.com/waterhunter2000-svg/vulnerability-reports/blob/main/04-mirotalk-checkpassword-oracle.md (CNA: VulDB)

## References

- https://vuldb.com/vuln/430291 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/430291/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-121535 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1019995 (CNA: VulDB; third-party-advisory)

- https://github.com/waterhunter2000-svg/vulnerability-reports (CNA: VulDB; related)

- https://github.com/miroslavpejic85/mirotalk/security/advisories/GHSA-x2r2-j5hf-hp36 (CNA: VulDB; broken-link)

- https://github.com/waterhunter2000-svg/vulnerability-reports/blob/main/04-mirotalk-checkpassword-oracle.md (CNA: VulDB; exploit)

- https://github.com/miroslavpejic85/mirotalk/commit/55bec1d05f931d2e43633d6d0b7274f79ec719dd (CNA: VulDB; patch)

- https://github.com/miroslavpejic85/mirotalk/commit/55bec1d05f931d2e43633d6d0b7274f79ec719dd (cna@vuldb.com)

- https://github.com/miroslavpejic85/mirotalk/security/advisories/GHSA-x2r2-j5hf-hp36 (cna@vuldb.com)

- https://github.com/waterhunter2000-svg/vulnerability-reports (cna@vuldb.com)

- https://github.com/waterhunter2000-svg/vulnerability-reports/blob/main/04-mirotalk-checkpassword-oracle.md (cna@vuldb.com)

- https://vuldb.com/cve/CVE-2026-121535 (cna@vuldb.com)

- https://vuldb.com/submit/1019995 (cna@vuldb.com)

- https://vuldb.com/vuln/430291 (cna@vuldb.com)

- https://vuldb.com/vuln/430291/cti (cna@vuldb.com)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-121535; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-121535; retrieved 2026-11-04; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-121535; retrieved 2026-11-04; source updated Not reported

Revision: 4139e4cc3774fbfd4b53bf36797f843c66972c0a2509a79bdae6af6671643271

Canonical: https://y2.dev/cve/CVE-2026-121535

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