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CVE.org (no NVD analysis yet)· CNA EEF

CVE-2026-94200: TLS 1.3 client ticket store crashed by NewSessionTicket with empty early_data extension in ssl

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.46% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Erlang OTP 00a333bcf2800b69f540369b54167e897dae7219, 11.2.12.14, 11.6.0.7; azl3 erlang 26.2.5.21-6 on Azure Linux 3.0 26.2.5.21-8.

Low priority for now. Upgrade to Erlang OTP 00a333bcf2800b69f540369b54167e897dae7219, 11.2.12.14, 11.6.0.7; azl3 erlang 26.2.5.21-6 on Azure Linux 3.0 26.2.5.21-8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Improper Validation of Consistency within Input vulnerability in Erlang OTP ssl (tls_handshake_1_3, ssl_handshake and tls_client_ticket_store modules) allows a malicious TLS 1.3 server to cause a denial of service of the ssl application on the client node. The TLS 1.3 client decodes the extensions of a NewSessionTicket message as if they came from EncryptedExtensions. It therefore accepts a 0-length early_data extension, a form that is only valid in ClientHello and EncryptedExtensions. With {session_tickets, auto}, the client stores the ticket in the node-global tls_client_ticket_store. On the next automatic resumption, tls_handshake_1_3:get_max_early_data/1 crashes the store with a case_clause. Repeated crashes can exceed the restart intensity of the ssl supervisors, which use the rest_for_one strategy, and take down ssl for all connections on the node. This issue affects OTP from OTP 23.3 before OTP 27.3.4.19, OTP 28.5.0.8, and OTP 29.1.2, corresponding to ssl from 10.3 before 11.2.12.14, 11.6.0.7, and 11.7.8.

HighCVSS 8.2 · v4.0—No exploit Fix available
Published
Oct 14, 2026
Updated
Oct 16, 2026
EPSS
0.4% · 40th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · EEF
8.2
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-94200

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (EEF). Independent of NVD's CPE analysis and usually ahead of it.

  • Erlang OTP

    • 23.3 and lateraffected · otpfixed in 27.3.4.19, 28.5.0.8, 29.1.2
    • 10.3 and lateraffected · otpfixed in 11.2.12.14, 11.6.0.7, 11.7.8
    • 0abe6f66db0d295cd06b0efab3bdb3caa2803930 and lateraffected · gitfixed in 66febc190e6dc42a5c4aedbfe250bf9a2edc2d5e, 00a333bcf2800b69f540369b54167e897dae7219, cd0334854bf3ef56dc16f9fb728efe88fb05c4ac

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12erlangfrom 0—
Debian:14erlangbefore 1:29.1.2+dfsg-11:29.1.2+dfsg-1
Red Hat:hummingbird:1erlang27before 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-asn1before 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-common_testbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-compilerbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-cryptobefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-debuggerbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-dialyzerbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-diameterbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-edocbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-eldapbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-erl_interfacebefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-ertsbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-etbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-eunitbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-examplesbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-ftpbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-gdb-toolsbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-inetsbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-jinterfacebefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-kernelbefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-megacobefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1
Red Hat:hummingbird:1erlang27-mnesiabefore 0:27.3.4.19-0.1.hum10:27.3.4.19-0.1.hum1

+17

Same product

erlang: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-89422TLS 1.3 client skips server authentication when ServerHello carries an unsolicited pre_shared_key extension
    37Monitor
  • CVE-2026-74835inets,httpd: Memory Exhaustion via Unenforced max_body_size During Chunked Body Reception
    34Monitor
  • CVE-2026-71380httpd applies no timeout while receiving a request body, parking a worker on a stalled client
    34Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-68956Sep 22, 2026 · SSH daemon allocates unbounded idle session channels, bypassing max_channels
    28Monitor
  • ← EarlierCVE-2026-105236Oct 14, 2026 · TLS 1.2 session resumption in ssl crosses SNI virtual-host client-certificate trust boundaries
    25Monitor
  • Later →CVE-2026-96596Oct 14, 2026 · erl_tar:extract/2 loops forever on a GNU sparse member with a trailing hole
    23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Erlang OTP00a333bcf2800b69f540369b54167e897dae7219Vendor (CNA)
Erlang OTP11.2.12.14Vendor (CNA)
Erlang OTP11.6.0.7Vendor (CNA)
Erlang OTP11.7.8Vendor (CNA)
Erlang OTP27.3.4.19Vendor (CNA)
Erlang OTP28.5.0.8Vendor (CNA)
Erlang OTP29.1.2Vendor (CNA)
Erlang OTP66febc190e6dc42a5c4aedbfe250bf9a2edc2d5eVendor (CNA)
Erlang OTPcd0334854bf3ef56dc16f9fb728efe88fb05c4acVendor (CNA)
azl3 erlang 26.2.5.21-6 on Azure Linux 3.026.2.5.21-8 · Release NotesMicrosoft (MSRC)
debian:erlang1:29.1.2+dfsg-1 · Debian:14Package registry (OSV)
red hat:erlang270:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-asn10:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-common_test0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-compiler0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-crypto0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-debugger0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-dialyzer0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-diameter0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-edoc0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-eldap0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-erl_interface0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-erts0:27.3.4.19-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 10, 2026+27 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-1288 · Improper Validation of Consistency within Input

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Exploit maturity— → none
  3. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records