CVE-2025-68702: Jervis Jervis Has A SHA-256 Hex Vulnerability

HIGH
Advisory Identifier: GHSA-67rj-pjg6-pq59
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CVSS 7.5
CWE-327
Published
Advisory Summary

CVE-2025-68702 is a HIGH (CVSS 7.5) jervis has a sha-256 hex vulnerability (CWE-327: Use of a Broken or Risky Cryptographic Algorithm) affecting Jervis libraries in the Maven ecosystem. The issue involves jervis has a sha-256 hex string padding bug. Remediation is available by upgrading affected packages to version 2.2.

CVE-2025-68702 at a Glance

CVE Identifier CVE-2025-68702
GHSA Identifier GHSA-67rj-pjg6-pq59
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-327: Use of a Broken or Risky Cryptographic Algorithm
Affected Product Jervis
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2025-68702

To remediate this vulnerability, upgrade all affected Jervis dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

net.gleske:jervis fixed: 2.2 
<dependency>
    <groupId>net.gleske</groupId>
    <artifactId>jervis</artifactId>
    <version>2.2</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=net.gleske

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2025-68702, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=net.gleske

Analyze the terminal output to locate any version of Jervis in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2), your application is affected.

Note: The mvn dependency:tree -Dincludes=net.gleske command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-327: Use of a Broken or Risky Cryptographic Algorithm, where the product uses a broken or risky cryptographic algorithm or protocol. In Jervis, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Vulnerability https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L622-L626 `padLeft(32, '0')` should be `padLeft(64, '0')`. SHA-256 produces 32 bytes = 64 hex characters. ### Impact * Inconsistent hash lengths when leading bytes are zero * Comparison failures for hashes with leading zeros * Potential security issues in hash-based comparisons * Could cause subtle bugs in systems relying on consistent hash lengths Severity is considered low for internal uses of this library but if there's any consumer using these methods directly then this is considered high. ### Patches Upgrade to Jervis 2.2. ### Workarounds Use an alternate SHA-256 hash function or upgrade.

CVE-2025-68702 Affected Jervis Versions

1 component(s)
Fixed Versions:
2.2
Product / Package Ecosystem Affected Versions Fixed Version
net.gleske:jervis
maven/net.gleske/jervis
Maven
< 2.2
2.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/samrocketman/jervis/security/advisories/GHSA-67rj-pjg6-pq59
NVD — CVE-2025-68702 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-68702
Security Fix Commit FIX COMMIT
https://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a
Jervis Source Repository REPOSITORY
https://github.com/samrocketman/jervis
Jervis Source Repository REPOSITORY
https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L622-L626
Security Fix Commit FIX COMMIT
http://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a

Frequently Asked Questions

What is CVE-2025-68702?
CVE-2025-68702 is a security vulnerability in Jervis involving Jervis Has a SHA-256 Hex String Padding Bug under CWE-327: Use of a Broken or Risky Cryptographic Algorithm.
Which Jervis versions are affected?
Affected versions include releases prior to 2.2 across affected packages: net.gleske:jervis.
What version fixes CVE-2025-68702?
Upgrading to 2.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jervis affected?
Yes, net.gleske:jervis is affected in releases prior to 2.2. Upgrade your dependency to 2.2 or later.
What is the CVSS score of CVE-2025-68702?
CVE-2025-68702 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2025-68702?
CVE-2025-68702 is classified under CWE-327: Use of a Broken or Risky Cryptographic Algorithm (The product uses a broken or risky cryptographic algorithm or protocol.).
How can I check Maven dependencies for CVE-2025-68702?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=net.gleske'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-67rj-pjg6-pq59",
  "modified" : "2026-01-21T16:21:29Z",
  "published" : "2026-01-13T14:52:31Z",
  "aliases" : [ "CVE-2025-68702" ],
  "summary" : "Jervis Has a SHA-256 Hex String Padding Bug",
  "details" : "### Vulnerability\n\nhttps://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L622-L626\n\n`padLeft(32, '0')` should be `padLeft(64, '0')`. SHA-256 produces 32 bytes = 64 hex characters.\n\n### Impact\n\n* Inconsistent hash lengths when leading bytes are zero\n* Comparison failures for hashes with leading zeros\n* Potential security issues in hash-based comparisons\n* Could cause subtle bugs in systems relying on consistent hash lengths\n\nSeverity is considered low for internal uses of this library but if there's any consumer using these methods directly then this is considered high.\n\n### Patches\n\nUpgrade to Jervis 2.2.\n\n### Workarounds\n\nUse an alternate SHA-256 hash function or upgrade.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "net.gleske:jervis"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/samrocketman/jervis/security/advisories/GHSA-67rj-pjg6-pq59"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-68702"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/samrocketman/jervis"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L622-L626"
  }, {
    "type" : "WEB",
    "url" : "http://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-327" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-13T14:52:31Z",
    "nvd_published_at" : "2026-01-13T20:16:07Z"
  }
}