CVE-2023-2978 | Abstrium Pydio Cells Change Subscription authorization

Exp

A vulnerability was found in Abstrium Pydio Cells 4.2.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the component Change Subscription Handler. The manipulation leads to authorization bypass. The exploit has been disclosed to the public and may be used. Upgrading to version 4.2.1 is able to address this issue. It is recommended to upgrade the affected component. VDB-230210 is the identifier assigned to this vulnerability.

Published: 2023-05-30 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-2978 is rated Exploit Available (51.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.72%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-2978

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-2978

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.12% 0.72% +0.61%
2 2026-06-09 0.18% 0.12% -0.06%
3 2026-05-31 — 0.18% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-2978

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.1 2.5 [email protected]
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 [email protected]
4.1 2.0 MEDIUM
AV:A/AC:L/Au:S/C:N/I:P/A:P Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 5.1 4.9 [email protected]

Weakness enumeration for CVE-2023-2978

GitHub Security Advisory for CVE-2023-2978

GHSA-mv7x-27pc-8c96 · Severity: medium · Ecosystem: go — Go package pydio/cells vulnerable to authorization bypass

Affected software / configurations for CVE-2023-2978

Vendor Product Version Raw CPE
abstrium pydio_cells 4.2.0 cpe:2.3:a:abstrium:pydio_cells:4.2.0:*:*:*:*:*:*:*

References for CVE-2023-2978

URL Tags
https://popalltheshells.medium.com/multiple-cves-affecting-pydio-cells-4-2-0-321e7e4712be Exploit Third Party Advisory
https://pydio.com/en/community/releases/pydio-cells/pydio-cells-enterprise-421 Release Notes
https://vuldb.com/?ctiid.230210 Permissions Required Third Party Advisory VDB Entry
https://vuldb.com/?id.230210 Permissions Required Third Party Advisory VDB Entry
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