CVE-2020-29555

Exp

The BackupDelete functionality in Grav CMS through 1.7.0-rc.17 allows an authenticated attacker to delete arbitrary files on the underlying server by exploiting a path-traversal technique. (This vulnerability can also be exploited by an unauthenticated attacker due to a lack of CSRF protection.)

Published: 2021-03-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-29555 is rated High Exploit Risk (76.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.15%). 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-2020-29555

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

Exploit prediction scoring system (EPSS) score for CVE-2020-29555

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 2025-11-21 5.54% 4.15% -1.38%
2 2025-11-18 4.15% 5.54% +1.38%
3 2025-08-27 — 4.15% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-29555

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H 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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.2 [email protected]
5.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
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.
 8.0 4.9 [email protected]

Weakness enumeration for CVE-2020-29555

GitHub Security Advisory for CVE-2020-29555

GHSA-gpmf-q5jh-hjx4 · Severity: high · Ecosystem: composer — Grav CMS Arbitrary File Deletion

Affected software / configurations for CVE-2020-29555

Vendor Product Version Raw CPE
getgrav grav_cms < 1.7.0 cpe:2.3:a:getgrav:grav_cms:*:*:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta1:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta10:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta2:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta3:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta4:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta5:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta6:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta7:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta8:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:beta9:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc1:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc10:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc11:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc12:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc13:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc14:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc15:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc16:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc17:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc2:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc20:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc3:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc4:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc5:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc6:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc7:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc8:*:*:*:*:*:*
getgrav grav_cms 1.7.0 cpe:2.3:a:getgrav:grav_cms:1.7.0:rc9:*:*:*:*:*:*

References for CVE-2020-29555

cvelogic Threat Intelligence