GHSA-gxp5-mv27-vjcj

Suggest an improvement
Source
https://github.com/advisories/GHSA-gxp5-mv27-vjcj
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-gxp5-mv27-vjcj/GHSA-gxp5-mv27-vjcj.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-gxp5-mv27-vjcj
Aliases
Published
2026-01-13T14:56:49Z
Modified
2026-01-13T22:26:29.327999Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Jervis's AES CBC Mode is Without Authentication
Details

Vulnerability

https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L682-L684

https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L720-L722

AES/CBC/PKCS5Padding lacks authentication, making it vulnerable to padding oracle attacks and ciphertext manipulation.

Impact

Severity is considered low for internal uses of this library but if there's any consumer using these methods directly then this is considered critical.

Unlikely to matter due to the design of how AES-256-CBC is used in conjunction with RSA and SHA-256 checksum within Jervis.

Jervis uses RSA to encrypt AES keys and a SHA-256 checksum of the encrypted data in local-only storage inaccessible from the web. After asymmetric decryption and before symmetric decryption, a SHA-256 checksum is performed on the metadata and encrypted data. All encrypted data is discarded if the checksum does not match without attempting to decrypt since the encrypted data is assumed invalid. The data stored is GitHub App authentication tokens which will expire within one hour.

Patches

Jervis patch will migrate from AES/CBC/PKCS5Padding to AES/GCM/NoPadding.

Upgrade to Jervis 2.2.

Workarounds

None

References

Database specific 
{
    "github_reviewed_at": "2026-01-13T14:56:49Z",
    "severity": "HIGH",
    "nvd_published_at": "2026-01-13T20:16:07Z",
    "cwe_ids": [
        "CWE-287",
        "CWE-327"
    ],
    "github_reviewed": true
}
References

Affected packages

Maven / net.gleske:jervis

Package

Name
net.gleske:jervis
View open source insights on deps.dev
Purl
pkg:maven/net.gleske/jervis

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.2

Affected versions

0.*

0.1
0.2
0.3
0.4
0.5
0.5.1
0.5.2
0.6
0.7
0.8
0.9
0.10
0.11
0.12
0.13

1.*

1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7

2.*

2.0
2.0.1
2.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-gxp5-mv27-vjcj/GHSA-gxp5-mv27-vjcj.json"