Vulnerability-Lookup

CVE-2026-49832 (GCVE-0-2026-49832)

Vulnerability from cvelistv5 – Published: 2026-09-02 17:18 – Updated: 2026-09-02 18:03

Title

DSpace: Remote Code Execution (RCE) possible in Velocity Templates used by LDN

Summary

DSpace open source software is a repository application which provides durable access to digital resources. From versions 8.0-rc1 to before 8.4, versions 9.0-rc1 to before 9.3, and version 10-rc1, Remote Code Execution (RCE) is possible via Velocity Templates used by DSpace for COAR Notify/LDN messages. This issue has been patched in versions 8.4, 9.3, and 10.0.

Severity

8 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 18:02 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/DSpace/DSpace/security/advisor…	x_refsource_CONFIRM
https://github.com/DSpace/DSpace/pull/12548	x_refsource_MISC
https://github.com/DSpace/DSpace/pull/12549	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
DSpace	DSpace	Affected: >= 8.0-rc1, < 8.4 Affected: >= 9.0-rc1, < 9.3 Affected: = 10-rc1	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-49832

Vulnerability from fkie_nvd - Published: 2026-09-02 18:19 - Updated: 2026-09-09 21:05

Severity

8.0 (High) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/DSpace/DSpace/pull/12548
	security-advisories@github.com	https://github.com/DSpace/DSpace/pull/12549
	security-advisories@github.com	https://github.com/DSpace/DSpace/security/advisories/GHSA-9x82-rm84-c6x7

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "DSpace",
          "vendor": "DSpace",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 8.0-rc1, \u003c 8.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 9.0-rc1, \u003c 9.3"
            },
            {
              "status": "affected",
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    }
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GHSA-9X82-RM84-C6X7

Vulnerability from github – Published: 2026-07-08 20:25 – Updated: 2026-07-08 20:25

Summary

DSpace has possible Remote Code Execution (RCE) through Velocity Templates used by LDN

Details

Overview

Remote Code Execution (RCE) is possible via Velocity Templates used by DSpace for COAR Notify/LDN messages. This vulnerability impacts DSpace versions 8.0 <= 8.3, 9.0 <= 9.2. The attacker MUST already have DSpace administrator credentials in order to perform the attack.

This attack is related to the path traversal attack identified in GHSA-9qm4-rh6w-pq5x as it was the impactful part of the "proof-of-concept" attack chain.

Impact

When chained with the LDN Path Traversal Attack identified in GHSA-9qm4-rh6w-pq5x, it may be possible to execute Java directly from Velocity templates using reflection. This is a very high impact vulnerability, but the attack can only be performed by a user that has DSpace Administrator privileges. Disabling LDN (see below) removes all known attack paths.

Velocity is also used for email templating, but there is no known attack path via emails templates. Nonetheless, the patches below also apply to email templates.

Patches

The fix is included in DSpace 8.4, 9.3 and 10.0. Please upgrade to one of these versions or disable LDN (see below)

If users cannot upgrade immediately, it is possible to manually patch their DSpace backend. (No changes are necessary to the frontend.) A pull request exists which can be used to patch systems running DSpace 8.x or 9.x. * Pull request for 9.x: https://github.com/DSpace/DSpace/pull/12548 (Downloadable patch file) * Pull request for 8.x: https://github.com/DSpace/DSpace/pull/12549 (Downloadable patch file)

Apply the patch to a DSpace instance

If at all possible, DSpace project maintainers recommend disabling LDN (see below) or upgrading a DSpace site based on the upgrade instructions. However, if users are unable to do so, they can manually apply the above patches to their Space backend as follows: 1. Download the appropriate patch file to the machine where DSpace backend is running 2. From the [dspace-src] folder, apply the patch, e.g. git apply [name-of-file].patch 3. Now, update the application's DSpace site (based loosely on the Upgrade instructions). This generally involves three steps: 1. Rebuild DSpace, e.g. mvn -U clean package (This will recompile all DSpace backend code) 2. Redeploy DSpace, e.g. ant update (This will copy all newly built code to the application's installation directory). Depending on an application's setup users also may need to copy the updated "server" webapp over to their Tomcat webapps folder. 3. Restart Tomcat (or runnable JAR)

Workarounds

In dspace.cfg or local.cfg, disable LDN (set ldn.enabled=false) if it is not crucial to the operation of the repository. (NOTE: LDN is disabled by default, so many DSpace sites may not use this feature)
Once users have patched theirr site or upgraded, they may safely enable LDN again.

Resources

This vulnerability is similar to vulnerabilities reported by Velocity itself: * Velocity 2.2. CVE: https://www.cve.org/CVERecord?id=CVE-2020-13936 * This was patched in Velocity 2.3, and DSpace already includes this patch.

Credits

Discovered & reported by Pablo Picurelli Ortiz (@superpegaso2703), cybersecurity student at Universidad Rey Juan Carlos. Reported as a possible attack combined with the LDN Path Traversal vulnerability. Code fix developed by Kim Shepherd (@kshepherd) of The Library Code

Severity

8.0 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

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        "name": "org.dspace:dspace-api"
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    "github_reviewed": true,
    "github_reviewed_at": "2026-07-08T20:25:01Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Overview\n\nRemote Code Execution (RCE) is possible via Velocity Templates used by DSpace for [COAR Notify/LDN messages](https://wiki.lyrasis.org/spaces/DSDOC9x/pages/379126679/COAR+Notify). _This vulnerability impacts DSpace versions 8.0 \u003c= 8.3, 9.0 \u003c= 9.2._ The attacker MUST already have DSpace administrator credentials in order to perform the attack.\n\nThis attack is related to the path traversal attack identified in [GHSA-9qm4-rh6w-pq5x](https://github.com/DSpace/DSpace/security/advisories/GHSA-9qm4-rh6w-pq5x) as it was the impactful part of the \"proof-of-concept\" attack chain.\n\n## Impact\n\nWhen chained with the LDN Path Traversal Attack identified in [GHSA-9qm4-rh6w-pq5x](https://github.com/DSpace/DSpace/security/advisories/GHSA-9qm4-rh6w-pq5x), it may be possible to execute Java directly from Velocity templates using reflection.  This is a very high impact vulnerability, but the attack can only be performed by a user that has DSpace Administrator privileges.  Disabling LDN (see below) removes all known attack paths.\n\nVelocity is also used for email templating, but there is no known attack path via emails templates. Nonetheless, the patches below also apply to email templates.\n\n## Patches\n\nThe fix is included in DSpace 8.4, 9.3 and 10.0.  Please upgrade to one of these versions or disable LDN (see below)\n\nIf users cannot upgrade immediately, it is possible to manually patch their DSpace backend. (No changes are necessary to the frontend.) A pull request exists which can be used to patch systems running DSpace 8.x or 9.x. \n* Pull request for 9.x: https://github.com/DSpace/DSpace/pull/12548  ([Downloadable patch file](https://github.com/DSpace/DSpace/pull/12548.patch))\n* Pull request for 8.x: https://github.com/DSpace/DSpace/pull/12549  ([Downloadable patch file](https://github.com/DSpace/DSpace/pull/12549.patch))\n\n### Apply the patch to a DSpace instance\nIf at all possible, DSpace project maintainers recommend disabling LDN (see below) or upgrading a DSpace site based on the upgrade instructions. However, if users are unable to do so, they can manually apply the above patches to their Space backend as follows:\n1. Download the appropriate patch file to the machine where DSpace backend is running\n2. From the `[dspace-src]` folder, apply the patch, e.g. `git apply [name-of-file].patch`\n3. Now, update the application\u0027s DSpace site (based loosely on the Upgrade instructions). This generally involves three steps:\n    1. Rebuild DSpace, e.g. `mvn -U clean package`  (This will recompile all DSpace backend code)\n    2. Redeploy DSpace, e.g. `ant update`  (This will copy all newly built code to the application\u0027s installation directory). Depending on an application\u0027s setup users also may need to copy the updated \"server\" webapp over to their Tomcat webapps folder.\n    3. Restart Tomcat (or runnable JAR)\n\n## Workarounds\n* In `dspace.cfg` or `local.cfg`, disable LDN (set `ldn.enabled=false`) if it is not crucial to the operation of the repository.  (NOTE: LDN is disabled by default, so many DSpace sites may not use this feature)\n* Once users have patched theirr site or upgraded, they may safely enable LDN again.\n\n## Resources\nThis vulnerability is similar to vulnerabilities reported by Velocity itself:\n* Velocity 2.2. CVE: https://www.cve.org/CVERecord?id=CVE-2020-13936\n    * This was patched in Velocity 2.3, and DSpace already includes this patch.\n\n## Credits\n\nDiscovered \u0026 reported by Pablo Picurelli Ortiz (@superpegaso2703), cybersecurity student at Universidad Rey Juan Carlos. Reported as a possible attack combined with the LDN Path Traversal vulnerability.\nCode fix developed by Kim Shepherd (@kshepherd) of The Library Code",
  "id": "GHSA-9x82-rm84-c6x7",
  "modified": "2026-07-08T20:25:01Z",
  "published": "2026-07-08T20:25:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/DSpace/DSpace/security/advisories/GHSA-9x82-rm84-c6x7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DSpace/DSpace/pull/12548"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DSpace/DSpace/pull/12549"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/DSpace/DSpace"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "DSpace has possible Remote Code Execution (RCE)  through Velocity Templates used by LDN"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-49832 (GCVE-0-2026-49832)

FKIE_CVE-2026-49832

GHSA-9X82-RM84-C6X7

Overview

Impact

Patches

Apply the patch to a DSpace instance

Workarounds

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Credits

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