CVE-2026-110676

Published: Ott 19, 2026 Last Modified: Ott 19, 2026
ExploitDB:
Other exploit source:
Google Dorks:

Description

AI Translation Available

Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by encoding exponent notation as full decimal digits under allow_bignum.

With allow_bignum, a JSON number with a fraction or exponent decodes to a Math::BigFloat, which stores the exponent separately and so decodes cheaply. Encoding it untyped or as JSON_TYPE_FLOAT writes the plain decimal form with one digit per unit of exponent. Nothing bounds the exponent, so the 12-byte text [1e30000000] encodes to 30 MB.

Untrusted JSON decoded with allow_bignum and encoded again can exhaust memory and CPU.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0017
Percentile
0,1th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

405

Asymmetric Resource Consumption (Amplification)

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Amplification Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
Technologies: Not Technology-Specific, Client Server
View CWE Details
https://github.com/rurban/Cpanel-JSON-XS/commit/996ab96972b…
https://github.com/rurban/Cpanel-JSON-XS/commit/996ab96972b967a917536d291947b5f…
https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/cha…
https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes