Description
Regular expression denial of service in Pydantic < 2.4.0, < 1.10.13 allows remote attackers to cause denial of service via a crafted email string.
Basic information
- Type
- reviewed
- Severity
- medium
- Advisory on GitHub
- Open advisory ↗
- Repository advisory
- —
- Source code
- Browse source ↗
- Published (advisory)
- 2024-04-15 03:31:00 UTC
- Updated
- 2025-02-13 19:01:05 UTC
- GitHub reviewed
- 2024-04-15 18:11:28 UTC
- NVD published
- 2024-04-14
EPSS Score
| Score |
Percentile |
|
0.28%
|
51.08% |
CVSS Scores
| Base score |
Version |
Severity |
Vector |
|
5.9
|
3.1 |
—
|
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Click to expand
- Attack vector (AV:N)
- Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
- Attack complexity (AC:H)
- Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
- Privileges required (PR:N)
- No account or special rights needed—anonymous or random user is enough.
- User interaction (UI:N)
- Nobody has to click “OK” or open a trap file; it can work without a victim helping.
- Scope (S:U)
- Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
- Confidentiality (C:N)
- Doesn’t really leak secrets in a meaningful way.
- Integrity (I:N)
- Data isn’t meaningfully altered or forged.
- Availability (A:H)
- Could take the service down hard or make it unusable for people who depend on it.
|
CWEs
| CWE id |
Name |
|
CWE-1333
|
Inefficient Regular Expression Complexity |
Affected packages (2)
Vulnerable version ranges and first patched releases as published by GitHub.
| Ecosystem |
Package |
Vulnerable range |
First patched |
Vulnerable functions |
| pip |
pydantic |
>= 2.0.0, < 2.4.0 |
2.4.0 |
—
|
| pip |
pydantic |
< 1.10.13 |
1.10.13 |
—
|
cvelogic
Threat Intelligence