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CVE-2023-45811

22
FAUCET Score

CVE-2023-45811 is a prototype pollution vulnerability in the Synchrony deobfuscator, specifically affecting versions prior to 2.4.4. This flaw, residing in the LiteralMap transformer, allows crafted input to modify Object prototype properties, potentially leading to arbitrary code execution. Rated 7.8 HIGH, it has a local attack vector and low attack complexity, with high impacts on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.1, < 2.4.4CPE matchmatch criteria
cpe:2.3:a:relative:synchrony:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.4
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
34.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 74th percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: deobfuscatorFixed in: 2.4.4

Vendor Advisories (1)

npmGHSA-jg82-xh3w-rhxxhigh

Synchrony deobfuscator prototype pollution vulnerability leading to arbitrary code execution

Oct 18, 2023

References

github.com / relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40
Patch
github.com / relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx
ExploitVendor Advisory
github.com / relative/synchrony/security/advisories/src/transformers/literalmap.ts
Broken Link