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

CVE-2026-83745: Apache Thrift, Apache Thrift: WebSocket frame decoders allocate the payload buffer from the declared length, not the bytes received (Node.js, D)

HighCVSS 8.7 · v4.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 34/100)

  • 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: 0.34% (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.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Apache Software Foundation Apache Thrift 0.25.0; azl3 thrift 0.24.0-1 on Azure Linux 3.0 0.25.0-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Apache Software Foundation Apache Thrift 0.25.0; azl3 thrift 0.24.0-1 on Azure Linux 3.0 0.25.0-1 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

Memory allocation with excessive size value, Improper handling of length parameter inconsistency vulnerability in Apache Thrift  nodejs and D lang bindings. Both bindings' WebSocket server transports read the payload length out of the frame header and allocate that many bytes immediately, without checking that the bytes have arrived. A single ~14-byte frame therefore commits as much memory as it cares to declare -- measured at 513 MiB against the Node.js server and 2 GiB against the D transport -- and in the Node.js case the connection is left open afterwards, so the frame can simply be sent again. This issue affects Apache Thrift before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Published
Oct 2, 2026
Updated
Oct 2, 2026
EPSS
0.3% · 28th percentile

Report tools

JSON

Action score

34

Monitor

Low priority for now.

CVSS
34 / 40 · 8.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · apache
8.7
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/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.

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

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When you'll hear from us

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  • 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?

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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 (apache). Independent of NVD's CPE analysis and usually ahead of it.

  • Apache Software Foundation Apache Thrift

    • before 0.25.0affected · semver
    • before 0.25.0affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12thriftfrom 0—
Red Hat:hummingbird:1perl-thriftbefore 0:0.25.0-0.1.hum10:0.25.0-0.1.hum1
Red Hat:hummingbird:1python3-thriftbefore 0:0.25.0-0.1.hum10:0.25.0-0.1.hum1
Red Hat:hummingbird:1thriftbefore 0:0.25.0-0.1.hum10:0.25.0-0.1.hum1
Red Hat:hummingbird:1thrift-develbefore 0:0.25.0-0.1.hum10:0.25.0-0.1.hum1
Red Hat:hummingbird:1thrift-glibbefore 0:0.25.0-0.1.hum10:0.25.0-0.1.hum1
Red Hat:hummingbird:1thrift-qtbefore 0:0.25.0-0.1.hum10:0.25.0-0.1.hum1

Same product

apache software foundation: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-83632Apache Thrift: C++ THttpTransport grows its line buffer without bound
    36Monitor
  • CVE-2026-91135Apache Thrift: C++ `THeaderTransport::transform()` heap buffer overflow (write direction)
    36Monitor
  • CVE-2026-96277Apache Thrift: Ruby `SimpleServer` ends `serve()` on any non-Transport/Protocol exception
    34Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-66859Oct 2, 2026 · Apache Thrift: c_glib multiplexed processor crashes on a message it cannot route
    34Monitor
  • ← EarlierCVE-2026-83663Oct 2, 2026 · Apache Thrift: TFramedTransport and THeaderTransport re-enter Read once per frame that carries no payload (Go)
    34Monitor
  • Later →CVE-2026-85476Oct 2, 2026 · Apache Thrift: c_glib `read_all` spins when the underlying read returns 0
    32Monitor

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
Apache Software Foundation Apache Thrift0.25.0Vendor (CNA)
azl3 thrift 0.24.0-1 on Azure Linux 3.00.25.0-1 · Release NotesMicrosoft (MSRC)
red hat:perl-thrift0:0.25.0-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:python3-thrift0:0.25.0-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:thrift0:0.25.0-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:thrift-devel0:0.25.0-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:thrift-glib0:0.25.0-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:thrift-qt0:0.25.0-0.1.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 13, 2026+42 d
EPSS, last 120 days

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

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.

  • CVE-2026-854940 days apartApache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: Framed transport and…
    34Monitor
  • CVE-2026-946330 days apartApache Thrift: Dart `TBinaryProtocol.readMessageBegin` allocates from the pre-versioned name length
    34Monitor
  • CVE-2026-946350 days apartApache Thrift: Lua `TBinaryProtocol:readMessageBegin` bypasses `checkStringSize` on the pre-versioned name
    34Monitor

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: patch commit or PR link · public bounty program.

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-130 · Improper Handling of Length Parameter Inconsistency

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/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.

ATT&CK techniques

—

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 (1 more)

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

All records