ractivejs ractive up to 1.4.4 Keypath Ractive#set prototype pollution

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k1.30+

Summaryinfo

A vulnerability has been found in ractivejs ractive up to 1.4.4 and classified as critical. The affected element is the function Ractive#set of the component Keypath Handler. The manipulation leads to prototype pollution. This vulnerability is referenced as CVE-2026-78181. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability was found in ractivejs ractive up to 1.4.4 and classified as critical. This issue affects the function Ractive#set of the component Keypath Handler. The manipulation with an unknown input leads to a prototype pollution vulnerability. Using CWE to declare the problem leads to CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. Impacted is confidentiality, integrity, and availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-78181. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1059 for this issue.

The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/23/2026 Advisory disclosed
08/23/2026 +0 days VulDB entry created
08/23/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 3448
Status: Not defined

CVE: CVE-2026-78181 (🔒)
GCVE (CVE): GCVE-0-2026-78181
GCVE (VulDB): GCVE-100-394565
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/23/2026 18:12
Changes: 08/23/2026 18:12 (57)
Complete: 🔍
Submitter: wjm3
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #884187: Ractive.js ractive 1.4.4 Prototype Pollution (by wjm3)

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