A vulnerability in the Cisco node-jose open source library before 0.11.0 could allow an unauthenticated, remote attacker to re-sign tokens using a key that is embedded within the token. The vulnerability is due to node-jose following the JSON Web Signature (JWS) standard for JSON Web Tokens (JWTs). This standard specifies that a JSON Web Key (JWK) representing a public key can be embedded within the header of a JWS. This public key is then trusted for verification. An attacker could exploit this by forging valid JWS objects by removing the original signature, adding a new public key to the header, and then signing the object using the (attacker-owned) private key associated with the public key embedded in that JWS header.
CVE-2018-0114
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 84.7%, top 1% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 98.6%
- KEV
- Not listed
Published
January 4, 2018
Last Modified
November 21, 2024
References (10)
- psirt@ciscohttp://www.securityfocus.com/bid/102445
- psirt@ciscohttps://github.com/cisco/node-jose/blob/master/CHANGELOG.md
- psirt@ciscohttps://github.com/zi0Black/POC-CVE-2018-0114
- psirt@ciscohttps://tools.cisco.com/security/center/viewAlert.x?alertId=56326
- psirt@ciscohttps://www.exploit-db.com/exploits/44324/
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/102445
- af854a3a-2127-422b-91ae-364da2661108https://github.com/cisco/node-jose/blob/master/CHANGELOG.md
- af854a3a-2127-422b-91ae-364da2661108https://github.com/zi0Black/POC-CVE-2018-0114
- af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/viewAlert.x?alertId=56326
- af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/44324/
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| node-jose | — | 0.11.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 33× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:24 UTCEPSS rescore
- 2026-07-09 19:06 UTCEPSS rescore
- 2026-07-08 15:11 UTCEPSS rescore
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- 2026-07-05 02:27 UTCEPSS rescore
- 2026-07-04 15:26 UTCOSV refresh
- 2026-07-04 06:28 UTCEPSS rescore
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- 2026-07-02 16:54 UTCEPSS rescore
- 2026-07-01 15:03 UTCEPSS rescore
- 2026-06-29 14:03 UTCEPSS rescore
- 2026-06-28 04:53 UTCEPSS rescore
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- 2026-06-25 13:47 UTCEPSS rescore
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- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-18 17:50 UTCEPSS rescore
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- 2026-06-17 17:50 UTCEPSS rescore
- 2026-06-16 17:50 UTCEPSS rescore
- 2026-06-16 03:13 UTCOSV refresh
- 2026-06-15 17:45 UTCEPSS rescore
- 2026-06-13 22:58 UTCEPSS rescore
- 2026-06-13 22:57 UTCEPSS rescore
- 2026-06-12 23:09 UTCEPSS rescore
- 2026-06-12 23:09 UTCEPSS rescore
- 2026-06-10 22:15 UTCEPSS rescore
- 2026-06-10 13:19 UTCEPSS rescore
- 2026-06-08 14:14 UTCEPSS rescore
- 2026-06-08 14:14 UTCEPSS rescore
- 2026-06-06 13:45 UTCEPSS rescore
- 2026-06-06 13:45 UTCEPSS rescore
- 2026-06-05 22:44 UTCEPSS rescore
- 2026-06-05 22:44 UTCEPSS rescore
- 2026-06-05 06:08 UTCEPSS rescore
- 2026-06-05 06:08 UTCEPSS rescore
- 2026-06-04 13:10 UTCEPSS rescore
- 2026-06-04 13:10 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-05-31 22:28 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 12:54 UTCEG score recompute
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-23 02:35 UTCOSV refresh
Publicly available exploits
(6 references)Working exploit code is in the public domain (5 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- GitHub PoCz-bool/Venom-JWTFirst seen Jan 27, 2025
针对JWT渗透开发的漏洞验证/密钥爆破工具,针对CVE-2015-9235/空白密钥/未验证签名攻击/CVE-2016-10555/CVE-2018-0114/CVE-2020-28042的结果生成用于FUZZ,也可使用字典/字符枚举(包括JJWT)的方式进行爆破(JWT Crack)
Open source ↗ - GitHub PoCj4k0m/CVE-2018-0114First seen Sep 3, 2021
Exploitation of a vulnerability in Cisco's node-jose, a JavaScript library created to manage JWT.
Open source ↗ - GitHub PoCscumdestroy/CVE-2018-0114First seen May 11, 2021
Exploit for Node-jose < 0.11.0 written in Ruby
Open source ↗ - GitHub PoCEremiel/CVE-2018-0114First seen Jan 3, 2021
python2.7 script for JWT generation
Open source ↗ - Exploit-DBEDB-44324First seen Mar 20, 2018
Cisco node-jos < 0.11.0 - Re-sign Tokens
Open source ↗ - GitHub PoCzi0Black/POC-CVE-2018-0114First seen Mar 20, 2018
This repository contains the POC of an exploit for node-jose < 0.11.0
Open source ↗
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Dependency Blast Radius
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