CVE-2026-49836

MEDIUMPre-NVD 4.64.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 4.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (8th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
4.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.6Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to version 1.17.1, SmartObject.save() writes an embedded smart object to a path taken verbatim from the PSD file. Because that name is attacker-controlled and unsanitised, a tool that extracts embedded objects from an untrusted .psd can be made to write attacker-chosen bytes to an attacker-chosen path (absolute or ../-traversing), outside its intended output directory. A secondary issue in SmartObject.open() for external-kind smart objects allows the attacker-controlled fullPath descriptor to be used as an arbitrary file read path, enabling exfiltration of the read content to the controlled write destination. Both issues are fixed in v1.17.1.

CVSS v3
4.6
EG Score
4.6MEDIUMmedium confidence
EG Risk
37
EG Risk 37/100

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 (value × EchelonGraph’s weight)
Severity46% × 45%
The EG Score, 4.6 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
8th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 9, 2026

Last Modified

September 30, 2026

Advisory Details (4)

Auto-updated Sep 10, 2026
Patch available. Sources: github_pr, github_release, github.
GitHub release Patch Available

Release v1.17.1

Patch available: psd-tools/psd-tools v1.17.1

http://github.com/psd-tools/psd-tools/releases/tag/v1.17.1
Web page

advisory-database/vulns/psd-tools/PYSEC-2026-2969.yaml at main · pypa/advisory-database · GitHub

https://github.com/pypa/advisory-database/tree/main/vulns/psd-tools/PYSEC-2026-2969.yaml
GitHub pull request Patch Available

fix(security): arbitrary file write/read via SmartObject path traversal (GHSA-2rmg-vrx8-9j2f)

Patch available: psd-tools/psd-tools v1.17.1 (PR #657 merged 2026-05-26)

https://github.com/psd-tools/psd-tools/pull/657
GitHub advisoryMentions a patch (unverified)

psd-tools: arbitrary file write/read via smart-object filename · Advisory · psd-tools/psd-tools · GitHub

https://github.com/psd-tools/psd-tools/security/advisories/GHSA-2rmg-vrx8-9j2f

Vendor Advisories for CVE-2026-49836(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
psd-tools1.10.7+dfsg.1-1 ... 1.9.34+dfsg.1-1 (16 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
psd-tools1.10.7+dfsg.1-1 ... 1.17.4+dfsg.1-1 (11 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
psd-tools1.10.7+dfsg.1-1 ... 1.17.0+dfsg.1-1 (9 versions)
  • every version up to 1.17.4+dfsg.1-1: fixed in 1.17.4+dfsg.1-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
psd-tools0.1.1 ... 1.9.9 (115 versions)
  • every version up to 1.17.1: fixed in 1.17.1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 31× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  3. 2026-10-12 15:59 UTCEG score recompute
  4. 2026-10-11 19:43 UTCEG score recompute
  5. 2026-10-11 16:57 UTCEG score recompute
  6. 2026-10-11 14:21 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  17. 2026-09-30 20:04 UTCEG score recompute
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  20. 2026-09-28 09:56 UTCEG score recompute
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  24. 2026-09-24 11:22 UTCEG score recompute
  25. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
Show 19 more
  1. 2026-09-23 05:51 UTCEG score recompute
  2. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-09-18 05:26 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-09-14 09:25 UTCEG score recompute
  8. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-09-13 08:16 UTCEG score recompute
  10. 2026-09-11 18:36 UTCEG score recompute
  11. 2026-09-11 17:22 UTCEG score recompute
  12. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-09-10 22:20 UTCEG score recompute
  14. 2026-09-10 21:55 UTCEG score recomputeFirst assessed: 4.6 MEDIUM
  15. 2026-09-10 21:54 UTCMITRE cvelistV5CVSS v3 → 4.6 · CVSS v4 → 4.6
  16. 2026-08-01 19:38 UTCEG score recompute
  17. 2026-07-26 12:14 UTCEG score recompute
  18. 2026-07-23 03:18 UTCEG score recompute
  19. 2026-07-09 23:46 UTCEG score recompute

Related CVEs(same product + same CWE)

Same product

3 shown

Debian:12:psd-tools · PyPI:psd-tools

Frequently asked(5)

What is CVE-2026-49836?
CVE-2026-49836 is a medium-severity vulnerability; its CVE record was published on July 9, 2026. psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to version 1.17.1, SmartObject.save() writes an embedded smart object to a path taken verbatim from the PSD file. Because that name is attacker-controlled and unsanitised, a tool that extracts embedded objects from an…
When was the CVE record for CVE-2026-49836 published?
The CVE record for CVE-2026-49836 was published on July 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 30, 2026; the record at its source may have been updated since.
Is CVE-2026-49836 actively exploited?
CVE-2026-49836 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49836?
CVE-2026-49836 has a CVSS base score of 4.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-49836?
A fix for CVE-2026-49836 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-49836 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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