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CVE-2026-33155

25
FAUCET Score

CVE-2026-33155 identifies a denial-of-service vulnerability in the DeepDiff Python library, affecting versions 5.0.0 through 8.6.1. The flaw allows an attacker to craft a small (40-byte) pickle payload that, when processed by DeepDiff's _RestrictedUnpickler, forces applications to allocate over 10 GB of memory, leading to a crash. This high-severity vulnerability (CVSS 8.7) has a network attack vector and low attack complexity, primarily impacting system availability through uncontrolled resource consumption (CWE-400). While there is no evidence of active exploitation or public exploit code, the issue has been patched in DeepDiff version 8.6.2, and a SUSE security update has been released.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0.0, < 8.6.2CPE matchmatch criteria
cpe:2.3:a:qluster:deepdiff:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 16th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 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
pippatch availablevia ghsa
Product: deepdiffFixed in: 8.6.2

Vendor Advisories (1)

pipGHSA-54jj-px8x-5w5qhigh

DeepDiff has Memory Exhaustion DoS through SAFE_TO_IMPORT

Mar 18, 2026

References

github.com / qlustered/deepdiff/commit/0d07ec21d12b46ef4e489383b363eadc22d990fb
Patch
github.com / qlustered/deepdiff/security/advisories/GHSA-54jj-px8x-5w5q
ExploitVendor Advisory