CVE-2019-9858

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
8.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, epss top5pct, public exploit)
CISA-KEV: Not listedEPSS PROB: 19%CVSS: 8.8Exploit: Metasploit · epss top5pct · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Remote code execution was discovered in Horde Groupware Webmail 5.2.22 and 5.2.17. Horde/Form/Type.php contains a vulnerable class that handles image upload in forms. When the Horde_Form_Type_image method onSubmit() is called on uploads, it invokes the functions getImage() and _getUpload(), which uses unsanitized user input as a path to save the image. The unsanitized POST parameter object[photo][img][file] is saved in the $upload[img][file] PHP variable, allowing an attacker to manipulate the $tmp_file passed to move_uploaded_file() to save the uploaded file. By setting the parameter to (for example) ../usr/share/horde/static/bd.php, one can write a PHP backdoor inside the web root. The static/ destination folder is a good candidate to drop the backdoor because it is always writable in Horde installations. (The unsanitized POST parameter went probably unnoticed because it's never submitted by the forms, which default to securely using a random path.)

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
70(Track)
EG Risk 70/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
19%
EPSS %ILE
97%
KEV
Not listed

Published

May 29, 2019

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Aug 24, 2026
Patch available.
generic

[SECURITY] [DSA 4468-1] php-horde-form security update

https://www.debian.org/security/2019/dsa-4468
generic

SSD Advisory – Horde Groupware Webmail Authenticated Arbitrary File Injection to RCE - SSD Secure Disclosure

https://ssd-disclosure.com/?p=3814&preview=true
generic

Bugtraq: [SECURITY] [DSA 4468-1] php-horde-form security update

https://seclists.org/bugtraq/2019/Jun/31
generic Patch Available

[SECURITY] [DLA 1822-1] php-horde-form security update

https://lists.debian.org/debian-lts-announce/2019/06/msg00007.html
generic

Packet Storm Security

http://packetstormsecurity.com/files/152476/Horde-Form-Shell-Upload.html

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
php-horde-form—2.0.18-3.1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
php-horde-form—2.0.18-3.1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
php-horde-form2.0.8-22.0.8-2+deb8u1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
php-horde-form2.0.15-12.0.15-1+deb9u1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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.

Showing the most recent 100 of 137 total refreshes for this CVE.

  1. 2026-09-24 13:59 UTCEPSS rescore
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  1. 2026-08-25 13:45 UTCEPSS rescore
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  30. 2026-07-23 01:47 UTCEG score recompute
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/multi/http/horde_form_file_upload✓ verified
    First seen Mar 24, 2019

    Horde Form File Upload Vulnerability

    Open source ↗

Related CVEs(same product + same CWE)

Same product

1 shown

Debian:11:php-horde-form

Frequently asked(5)

What is CVE-2019-9858?
CVE-2019-9858 is a high vulnerability published on May 29, 2019. Remote code execution was discovered in Horde Groupware Webmail 5.2.22 and 5.2.17. Horde/Form/Type.php contains a vulnerable class that handles image upload in forms. When the HordeFormTypeimage method onSubmit() is called on uploads, it invokes the functions getImage() and getUpload(), which uses…
When was CVE-2019-9858 disclosed?
CVE-2019-9858 was first published in the National Vulnerability Database on May 29, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-9858 actively exploited?
CVE-2019-9858 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19% probability of exploitation in the next 30 days, which ranks it in the top 2.8% of all scored CVEs.
What is the CVSS score of CVE-2019-9858?
CVE-2019-9858 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2019-9858?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-9858, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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