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CVE-2022-36059· NVD / CVE Program· CNA GitHub_M

Prototype pollution in matrix-js-sdk

Noroxi assessment

Priority: Monitor (action score 21/100)

  • 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: 0.93% (FIRST EPSS); higher than 60% of all records.
  • 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: thunderbird (AlmaLinux:8) 102.3.0-3.el8_6.alma; thunderbird (AlmaLinux:9) 102.3.0-3.el9_0.alma; thunderbird (Debian:12) 1:102.2.1-1.
  • Severity is disputed: the assigning authority (CNA) scores it 8.2, NVD 5.3.

Low priority for now. Upgrade to thunderbird (AlmaLinux:8) 102.3.0-3.el8_6.alma; thunderbird (AlmaLinux:9) 102.3.0-3.el9_0.alma; thunderbird (Debian:12) 1:102.2.1-1 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

matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. In versions prior to 19.4.0 events sent with special strings in key places can temporarily disrupt or impede the matrix-js-sdk from functioning properly, potentially impacting the consumer's ability to process data safely. Note that the matrix-js-sdk can appear to be operating normally but be excluding or corrupting runtime data presented to the consumer. This issue has been fixed in matrix-js-sdk 19.4.0 and users are advised to upgrade. Users unable to upgrade may mitigate this issue by redacting applicable events, waiting for the sync processor to store data, and restarting the client. Alternatively, redacting the applicable events and clearing all storage will often fix most perceived issues. In some cases, no workarounds are possible.

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
Mar 28, 2023
Updated
Jun 17, 2026
EPSS
0.9% · 60th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.3
CNA · GitHub_M
8.2
2.9 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

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-2022-36059

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.

VendorProduct
matrixjavascript sdk

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • matrix javascript sdkbefore 19.4.0

Versions reported by the vendor

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

  • matrix-org matrix-js-sdk

    • < 19.4.0affected

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:8thunderbirdbefore 102.3.0-3.el8_6.alma102.3.0-3.el8_6.alma
AlmaLinux:9thunderbirdbefore 102.3.0-3.el9_0.alma102.3.0-3.el9_0.alma
Debian:12thunderbirdbefore 1:102.2.1-11:102.2.1-1
npmmatrix-js-sdkbefore 19.4.019.4.0
openSUSE:Tumbleweedelement-desktopbefore 1.11.4-1.11.11.4-1.1
openSUSE:Tumbleweedelement-webbefore 1.11.4-1.11.11.4-1.1
openSUSE:TumbleweedMozillaThunderbirdbefore 102.2.1-1.1102.2.1-1.1
Red Hat:enterprise_linux:7::clientthunderbirdbefore 0:102.3.0-3.el7_90:102.3.0-3.el7_9
Red Hat:enterprise_linux:7::clientthunderbird-debuginfobefore 0:102.3.0-3.el7_90:102.3.0-3.el7_9
Red Hat:enterprise_linux:8::appstreamthunderbirdbefore 0:102.3.0-3.el8_60:102.3.0-3.el8_6
Red Hat:enterprise_linux:8::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el8_60:102.3.0-3.el8_6
Red Hat:enterprise_linux:8::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el8_60:102.3.0-3.el8_6
Red Hat:enterprise_linux:9::appstreamthunderbirdbefore 0:102.3.0-3.el9_00:102.3.0-3.el9_0
Red Hat:enterprise_linux:9::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el9_00:102.3.0-3.el9_0
Red Hat:enterprise_linux:9::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el9_00:102.3.0-3.el9_0
Red Hat:rhel_e4s:8.1::appstreamthunderbirdbefore 0:102.3.0-3.el8_10:102.3.0-3.el8_1
Red Hat:rhel_e4s:8.1::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el8_10:102.3.0-3.el8_1
Red Hat:rhel_e4s:8.1::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el8_10:102.3.0-3.el8_1
Red Hat:rhel_eus:8.2::appstreamthunderbirdbefore 0:102.3.0-3.el8_20:102.3.0-3.el8_2
Red Hat:rhel_eus:8.2::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el8_20:102.3.0-3.el8_2
Red Hat:rhel_eus:8.2::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el8_20:102.3.0-3.el8_2
Red Hat:rhel_eus:8.4::appstreamthunderbirdbefore 0:102.3.0-3.el8_40:102.3.0-3.el8_4
Red Hat:rhel_eus:8.4::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el8_40:102.3.0-3.el8_4
Red Hat:rhel_eus:8.4::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el8_40:102.3.0-3.el8_4

+3

Same product

matrix: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-28427Prototype pollution in matrix-js-sdk
    32Monitor
  • CVE-2022-39250Matrix JavaScript SDK vulnerable to key/device identifier confusion in SAS verification
    30Monitor
  • CVE-2022-39251Matrix Javascript SDK vulnerable to Olm/Megolm protocol confusion
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2022-39236Sep 28, 2022 · Matrix Javascript SDK improper beacon events can cause availability issues
    21Monitor
  • ← EarlierCVE-2022-39249Sep 28, 2022 · Matrix Javascript SDK vulnerable to impersonation via forwarded Megolm sessions
    30Monitor
  • Later →CVE-2023-29529Apr 14, 2023 · matrix-js-sdk vulnerable to invisible eavesdropping in group calls
    21Monitor

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
almalinux:thunderbird102.3.0-3.el8_6.alma · AlmaLinux:8Package registry (OSV)
debian:thunderbird1:102.2.1-1 · Debian:12Package registry (OSV)
npm:matrix-js-sdk19.4.0Package registry (OSV)
opensuse:element-desktop1.11.4-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:element-web1.11.4-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:MozillaThunderbird102.2.2-150200.8.82.1 · openSUSE:Leap 15.3Package registry (OSV)
red hat:thunderbird0:102.3.0-3.el8_6 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:thunderbird-debuginfo0:102.3.0-3.el8_6 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:thunderbird-debugsource0:102.3.0-3.el8_6 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
rocky linux:thunderbird0:102.3.0-3.el8_6 · Rocky Linux:8Package registry (OSV)
suse:MozillaThunderbird102.2.2-150200.8.82.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP3Package 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.

No dated events beyond publication.

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.

No commit or PR link among the references.

Credits

All researchers

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

No credits in the CNA record.

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
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

nvd-primary

Attack context

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

Change log

  1. Fix✗ → ✓

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

References

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

All records