TI-2023-14637 Aliases CVE-2023-30858

Denosaurs emoji has ReDoS vulnerability in `replace` function

HIGH 72CWE-1333Published 2023-04-28 · Updated 2025-01-30

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-1333.

Summary

The Denosaurs emoji package provides emojis for dinosaurs. Starting in version 0.1.0 and prior to version 0.3.0, the reTrimSpace regex has 2nd degree polynomial inefficiency, leading to a delayed response given a big payload. The issue has been patched in 0.3.0. As a workaround, avoid using the `replace`, `unemojify`, or `strip` functions.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01162 67th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed emoji (denosaurs): 0.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
denosaurs	emoji	before 0.3.0	0.3.0	Patch available	CNA

emoji Vendordenosaurs Affected before 0.3.0 Fixed in 0.3.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:denosaurs:emoji::::::::	0.1.0 to before 0.3.0	Vulnerable	denosaurs

cpe:2.3:a:denosaurs:emoji:*:*:*:*:*:*:*:* Versions 0.1.0 to before 0.3.0 Vulnerable ·denosaurs

Remediation

Fix · CNA emoji (denosaurs) Fixed in 0.3.0

Timeline

2026-10-02 Threatist record created from CVE-2023-30858

References

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences