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  4. CVE 2026 84832 unsafe deserialization in the rest interface
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Back to active CVEs
High · CVSS 8.6CVE-2026-84832

Unsafe deserialization in the REST interfaceCVE-2026-84832

Answer in brief

CVE-2026-84832 records a High severity (CVSS 8.6) vulnerability in Unsafe deserialization in the REST interface. The current sources do not mark it as known exploited. The current feed maps SEPPmail AG/SEPPmail Secure Email Gateway (SEG) (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 3, 2026Updated Oct 8, 2026Source checked Oct 18, 2026First seen by HOL Sep 3, 2026Material review Oct 8, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.6
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps SEPPmail AG/SEPPmail Secure Email Gateway (SEG) (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
SEPPmail AG/SEPPmail Secure Email Gateway (SEG)generic>=0 <15.0.615.0.6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for SEPPmail AG/SEPPmail Secure Email Gateway (SEG).
  2. 2Review the reported fix. Update SEPPmail AG/SEPPmail Secure Email Gateway (SEG) to 15.0.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 3, 2026

Sources and claim methodology

  • Source referencedownloads.seppmail.com
  • GitHub security advisorygithub.com
Upstream source description

SEPPmail Secure Email Gateway before 15.0.6 deserializes attacker-controlled data in a privileged REST import workflow without adequate validation. An attacker with a privileged API token can execute arbitrary commands with "nobody" privileges.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • @fastify/jwt vulnerable to missing token expiration when per-call options drop global defaultsSame generic ecosystem
  • AUTOMATIC1111 stable-diffusion-webui Card Builder ui_extra_networks.py create_item_html cross site scriptingSame generic ecosystem
  • AUTOMATIC1111 stable-diffusion-webui Metadata Extraction sd_models.py read_metadata_from_safetensors allocation of resourcesSame generic ecosystem
  • AUTOMATIC1111 stable-diffusion-webui Model Instantiation sd_models.py get_obj_from_str code injectionSame generic ecosystem
  • AUTOMATIC1111 stable-diffusion-webui Extra-Networks Card Builder sd_models.py read_metadata_from_safetensors cross site scriptingSame generic ecosystem
  • dyad-sh dyad OAuth Callback cross-site request forgerySame generic ecosystem

Record context

Vulnerability class
Deserialization
EPSS
Not reported
CWE IDs
CWE-502, CWE-78
Source
CVE List V5
Source checked
Oct 18, 2026
References
2 linked sources
Open source record