CyberSecBulletin

Handnot2 vulnerabilities

We track 5 vulnerabilities in Handnot2 products across 2 products. 5 are rated high or critical, and none are known to be exploited. The most recent was published on October 22, 2026.

5vulnerabilities
1critical
4high
0exploited
8.5average CVSS score

Latest Handnot2 vulnerabilities

  • 8.7 High severity

    esaml: Improper Handling of Highly Compressed Data (Data Amplification)

    CVE-2026-93471Handnot2

    Improper Handling of Highly Compressed Data (Data Amplification) in esaml_binding in dropbox esaml allows an unauthenticated attacker to exhaust server memory and crash the Erlang VM via a crafted compressed SAMLResponse. esaml_binding:decode_response/2 base64

  • 8.2 High severity

    esaml: Allocation of Resources Without Limits or Throttling

    CVE-2026-86696Handnot2

    Allocation of Resources Without Limits or Throttling vulnerability in esaml in dropbox esaml allows an unauthenticated attacker to exhaust the Erlang VM atom table and crash the node via unsigned LogoutResponse messages. esaml:status_code_map/1 in src/esaml.er

  • 8.7 High severity

    esaml: Allocation of Resources Without Limits or Throttling

    CVE-2026-105270Arekinath

    Allocation of Resources Without Limits or Throttling vulnerability in esaml_binding in dropbox esaml allows an unauthenticated attacker to exhaust the Erlang VM atom table and crash the node via a crafted SAMLResponse. esaml_binding:decode_response/2 parses th

  • 7.6 High severity

    samly: Insufficient Verification of Data Authenticity

    CVE-2026-53425Dropbox

    Insufficient Verification of Data Authenticity vulnerability in dropbox samly allows an attacker to establish an authenticated session using a SAML response the service provider never requested. Samly.SPHandler.validate_authresp/3 in lib/samly/sp_handler.ex va

  • 9.1 Critical severity

    samly: Authentication Bypass by Capture-replay

    CVE-2026-53424Dropbox

    Authentication Bypass by Capture-replay vulnerability in dropbox samly allows an attacker to authenticate as the subject of a captured SAML assertion by resubmitting it. Samly.Helper.decode_idp_auth_resp/3 in lib/samly/helper.ex calls esaml_sp:validate_asserti