The "action" get_sess_id in the web application of Pydio through 8.2.2 discloses the session cookie value in the response body, enabling scr
The "action" get_sess_id in the web application of Pydio through 8.2.2 discloses the session cookie value in the response body, enabling scripts to get access to its value. This identifier can be reused by an attacker to impersonate a user and perform actions on behalf of him/her (if the session is still active).
- Published
- May 31, 2019
- Updated
- Jun 16, 2026
- EPSS
- 1.0% · 63th percentile
- CWE
- CWE-384
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Report tools
Action score
26
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.0%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| pydio | pydio | cpe:2.3:a:pydio:pydio |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- pydio pydioup to 8.2.2 inclusive
Same product
pydio: all recordsOther highest-scoring records for the same primary product.
- CVE-2013-4267Ajaxeplorer before 5.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) archive_name parameter to40Plan
- CVE-2019-9642An issue was discovered in proxy.php in pydio-core in Pydio through 8.2.2.40Plan
- CVE-2018-20718In Pydio before 8.2.2, an attack is possible via PHP Object Injection because a user is allowed to use the $phpserial$a:0:{} syntax to store40Plan
- CVE-2015-3431Pydio (formerly AjaXplorer) before 6.0.7 allows remote attackers to execute arbitrary commands via unspecified vectors, aka "Pydio OS Comman40Plan
- CVE-2019-20453A problem was found in Pydio Core before 8.2.4 and Pydio Enterprise before 8.2.4.36Monitor
- CVE-2019-20452A problem was found in Pydio Core before 8.2.4 and Pydio Enterprise before 8.2.4.36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-384 · Session FixationCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Session Credential Falsification through ForgingCAPEC-196likelihood: Medium · Medium
- Exploitation of Trusted IdentifiersCAPEC-21likelihood: High · High
- Accessing/Intercepting/Modifying HTTP CookiesCAPEC-31likelihood: High · High
- Manipulating Opaque Client-based Data TokensCAPEC-39likelihood: High · Medium
- Session Credential Falsification through PredictionCAPEC-59likelihood: High · High
- Reusing Session IDs (aka Session Replay)CAPEC-60likelihood: High · High
- Session FixationCAPEC-61likelihood: Medium · High
ATT&CK techniques
- Access Token ManipulationT1134
- Access Token Manipulation:Token Impersonation/TheftT1134.001
- Access Token Manipulation: Create Process with TokenT1134.002
- Access Token Manipulation: Make and Impersonate TokenT1134.003
- Steal Application Access TokenT1528
- Steal Web Session CookieT1539
- Use Alternate Authentication Material:Web Session CookieT1550.004
- Forge Web CredentialsT1606
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.